/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-examples/standard_copy4_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:34:27,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:34:27,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:34:27,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:34:27,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:34:27,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:34:27,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:34:27,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:34:27,350 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:34:27,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:34:27,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:34:27,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:34:27,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:34:27,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:34:27,365 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:34:27,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:34:27,369 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:34:27,372 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:34:27,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:34:27,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:34:27,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:34:27,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:34:27,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:34:27,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:34:27,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:34:27,405 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:34:27,405 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:34:27,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:34:27,408 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:34:27,409 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:34:27,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:34:27,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:34:27,413 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:34:27,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:34:27,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:34:27,416 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:34:27,417 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:34:27,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:34:27,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:34:27,418 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:34:27,419 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:34:27,426 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 03:34:27,474 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:34:27,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:34:27,479 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:34:27,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:34:27,480 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:34:27,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:34:27,481 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:34:27,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:34:27,481 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:34:27,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:34:27,483 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:34:27,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:34:27,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:34:27,483 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:34:27,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:34:27,484 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:34:27,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:34:27,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:34:27,485 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:34:27,485 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:34:27,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:34:27,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:34:27,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:34:27,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:34:27,486 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:34:27,486 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:34:27,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:34:27,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:34:27,487 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:34:27,487 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:34:27,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:34:27,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:34:27,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:34:27,939 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:34:27,940 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:34:27,941 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy4_ground-2.i [2020-10-29 03:34:28,026 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fbe95d38/a0611853ec3a407088672067853ff676/FLAGad47d0e91 [2020-10-29 03:34:28,676 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:34:28,677 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_copy4_ground-2.i [2020-10-29 03:34:28,692 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fbe95d38/a0611853ec3a407088672067853ff676/FLAGad47d0e91 [2020-10-29 03:34:29,041 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fbe95d38/a0611853ec3a407088672067853ff676 [2020-10-29 03:34:29,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:34:29,056 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:34:29,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:34:29,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:34:29,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:34:29,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:34:29" (1/1) ... [2020-10-29 03:34:29,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ce40035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:29, skipping insertion in model container [2020-10-29 03:34:29,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:34:29" (1/1) ... [2020-10-29 03:34:29,084 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:34:29,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:34:29,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:34:29,363 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:34:29,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:34:29,409 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:34:29,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:29 WrapperNode [2020-10-29 03:34:29,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:34:29,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:34:29,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:34:29,411 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:34:29,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:29" (1/1) ... [2020-10-29 03:34:29,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:29" (1/1) ... [2020-10-29 03:34:29,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:29" (1/1) ... [2020-10-29 03:34:29,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:29" (1/1) ... [2020-10-29 03:34:29,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:29" (1/1) ... [2020-10-29 03:34:29,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:29" (1/1) ... [2020-10-29 03:34:29,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:29" (1/1) ... [2020-10-29 03:34:29,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:34:29,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:34:29,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:34:29,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:34:29,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:34:29,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:34:29,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:34:29,564 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:34:29,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:34:29,565 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:34:29,565 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:34:29,565 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:34:29,565 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 03:34:29,565 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 03:34:29,565 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:34:29,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:34:29,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:34:29,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:34:29,566 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:34:29,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:34:29,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:34:29,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:34:29,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:34:29,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:34:29,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:34:30,117 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:34:30,118 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-29 03:34:30,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:34:30 BoogieIcfgContainer [2020-10-29 03:34:30,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:34:30,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:34:30,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:34:30,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:34:30,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:34:29" (1/3) ... [2020-10-29 03:34:30,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9531b63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:34:30, skipping insertion in model container [2020-10-29 03:34:30,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:29" (2/3) ... [2020-10-29 03:34:30,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9531b63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:34:30, skipping insertion in model container [2020-10-29 03:34:30,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:34:30" (3/3) ... [2020-10-29 03:34:30,131 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_copy4_ground-2.i [2020-10-29 03:34:30,145 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:34:30,151 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:34:30,166 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:34:30,199 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:34:30,199 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:34:30,199 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:34:30,199 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:34:30,199 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:34:30,200 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:34:30,200 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:34:30,200 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:34:30,220 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-10-29 03:34:30,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 03:34:30,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:30,228 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] [2020-10-29 03:34:30,229 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:30,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:30,237 INFO L82 PathProgramCache]: Analyzing trace with hash 340893040, now seen corresponding path program 1 times [2020-10-29 03:34:30,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:30,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220610476] [2020-10-29 03:34:30,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:30,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:30,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:30,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:30,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:30,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:30,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:31,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:31,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 03:34:31,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:34:31,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 765 [2020-10-29 03:34:31,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:31,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:31,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:34:31,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:34:31,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:34:31,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:34:31,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:31,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:31,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:31,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:31,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:31,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:31,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:34:31,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:31,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:31,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:31,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:31,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:31,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:34:31,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:34:31,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220610476] [2020-10-29 03:34:31,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:34:31,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 03:34:31,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803589970] [2020-10-29 03:34:31,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 03:34:31,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:31,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 03:34:31,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:34:31,334 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 4 states. [2020-10-29 03:34:31,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:31,500 INFO L93 Difference]: Finished difference Result 79 states and 113 transitions. [2020-10-29 03:34:31,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 03:34:31,503 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-29 03:34:31,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:31,512 INFO L225 Difference]: With dead ends: 79 [2020-10-29 03:34:31,512 INFO L226 Difference]: Without dead ends: 41 [2020-10-29 03:34:31,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:34:31,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-29 03:34:31,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2020-10-29 03:34:31,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-29 03:34:31,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-10-29 03:34:31,564 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 23 [2020-10-29 03:34:31,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:31,565 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-10-29 03:34:31,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 03:34:31,565 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-10-29 03:34:31,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 03:34:31,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:31,567 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] [2020-10-29 03:34:31,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:34:31,567 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:31,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:31,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1144251094, now seen corresponding path program 1 times [2020-10-29 03:34:31,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:31,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874945968] [2020-10-29 03:34:31,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:31,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:31,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:31,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:31,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:31,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:31,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:33,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:36,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:36,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 03:34:36,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:34:36,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:34:36,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:36,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:36,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:34:36,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:34:36,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 03:34:36,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:34:37,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:37,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:37,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:37,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:37,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:37,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:34:37,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:37,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:37,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:37,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:37,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:37,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:34:37,408 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:34:37,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874945968] [2020-10-29 03:34:37,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:34:37,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:34:37,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394250334] [2020-10-29 03:34:37,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:34:37,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:37,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:34:37,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:34:37,430 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 16 states. [2020-10-29 03:34:38,693 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-10-29 03:34:38,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:38,943 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2020-10-29 03:34:38,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:34:38,945 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 31 [2020-10-29 03:34:38,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:38,949 INFO L225 Difference]: With dead ends: 71 [2020-10-29 03:34:38,950 INFO L226 Difference]: Without dead ends: 67 [2020-10-29 03:34:38,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=200, Invalid=792, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:34:38,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-29 03:34:38,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 46. [2020-10-29 03:34:38,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-29 03:34:38,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2020-10-29 03:34:38,969 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 31 [2020-10-29 03:34:38,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:38,969 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2020-10-29 03:34:38,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:34:38,970 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2020-10-29 03:34:38,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 03:34:38,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:38,971 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:34:38,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:34:38,971 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:38,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:38,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1118081844, now seen corresponding path program 2 times [2020-10-29 03:34:38,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:38,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098328000] [2020-10-29 03:34:38,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:38,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:38,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:39,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:39,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:39,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:39,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:40,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:43,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:43,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 03:34:43,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:34:43,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:34:43,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:43,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:43,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:34:43,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:34:43,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 03:34:43,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:34:44,451 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 41 [2020-10-29 03:34:45,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:45,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:45,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:45,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:45,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:45,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:45,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:34:45,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:45,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:45,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:45,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:45,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:45,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:45,176 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:34:45,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098328000] [2020-10-29 03:34:45,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:34:45,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:34:45,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673203328] [2020-10-29 03:34:45,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:34:45,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:45,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:34:45,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:34:45,180 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand 19 states. [2020-10-29 03:34:46,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:46,821 INFO L93 Difference]: Finished difference Result 84 states and 97 transitions. [2020-10-29 03:34:46,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:34:46,822 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 33 [2020-10-29 03:34:46,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:46,826 INFO L225 Difference]: With dead ends: 84 [2020-10-29 03:34:46,826 INFO L226 Difference]: Without dead ends: 80 [2020-10-29 03:34:46,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=282, Invalid=1050, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:34:46,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-29 03:34:46,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 48. [2020-10-29 03:34:46,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-29 03:34:46,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-10-29 03:34:46,842 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 33 [2020-10-29 03:34:46,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:46,843 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-10-29 03:34:46,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:34:46,843 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-10-29 03:34:46,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 03:34:46,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:46,844 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:34:46,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:34:46,845 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:46,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:46,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1739236370, now seen corresponding path program 3 times [2020-10-29 03:34:46,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:46,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649339355] [2020-10-29 03:34:46,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:46,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:46,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:46,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:46,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:46,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:46,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:49,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:51,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:51,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 03:34:51,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:34:51,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:34:51,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:51,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:51,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:34:51,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:34:51,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 03:34:51,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:34:53,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:53,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:53,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:53,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:53,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:53,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:53,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:34:53,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:53,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:53,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:53,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:53,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:53,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:53,068 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:34:53,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649339355] [2020-10-29 03:34:53,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:34:53,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:34:53,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037427982] [2020-10-29 03:34:53,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:34:53,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:53,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:34:53,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:34:53,072 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 18 states. [2020-10-29 03:34:53,806 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2020-10-29 03:34:54,306 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-10-29 03:34:54,752 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-29 03:34:55,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:55,834 INFO L93 Difference]: Finished difference Result 90 states and 106 transitions. [2020-10-29 03:34:55,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:34:55,835 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 35 [2020-10-29 03:34:55,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:55,840 INFO L225 Difference]: With dead ends: 90 [2020-10-29 03:34:55,840 INFO L226 Difference]: Without dead ends: 86 [2020-10-29 03:34:55,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=315, Invalid=1091, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:34:55,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-29 03:34:55,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 50. [2020-10-29 03:34:55,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-29 03:34:55,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-10-29 03:34:55,862 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 35 [2020-10-29 03:34:55,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:55,862 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-10-29 03:34:55,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:34:55,863 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-10-29 03:34:55,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 03:34:55,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:55,864 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:34:55,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:34:55,865 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:55,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:55,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1668281712, now seen corresponding path program 4 times [2020-10-29 03:34:55,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:55,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055008538] [2020-10-29 03:34:55,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:55,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:55,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:55,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:55,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:55,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:55,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:58,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:00,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:00,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-29 03:35:00,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:35:00,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:35:00,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:00,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:00,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:35:00,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:35:00,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 03:35:00,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:01,238 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 36 [2020-10-29 03:35:02,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:02,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:02,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:02,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:02,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:02,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:35:02,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:02,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:02,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:02,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:02,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:02,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:02,026 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:35:02,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055008538] [2020-10-29 03:35:02,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:02,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:35:02,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116574430] [2020-10-29 03:35:02,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:35:02,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:02,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:35:02,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:35:02,029 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 19 states. [2020-10-29 03:35:03,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:03,906 INFO L93 Difference]: Finished difference Result 96 states and 115 transitions. [2020-10-29 03:35:03,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 03:35:03,906 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 37 [2020-10-29 03:35:03,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:03,910 INFO L225 Difference]: With dead ends: 96 [2020-10-29 03:35:03,910 INFO L226 Difference]: Without dead ends: 92 [2020-10-29 03:35:03,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=409, Invalid=1397, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 03:35:03,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-29 03:35:03,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 52. [2020-10-29 03:35:03,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-29 03:35:03,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2020-10-29 03:35:03,941 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 37 [2020-10-29 03:35:03,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:03,944 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2020-10-29 03:35:03,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:35:03,945 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2020-10-29 03:35:03,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 03:35:03,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:03,947 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 03:35:03,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:35:03,948 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:03,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:03,954 INFO L82 PathProgramCache]: Analyzing trace with hash 478976048, now seen corresponding path program 1 times [2020-10-29 03:35:03,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:03,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146621434] [2020-10-29 03:35:03,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:03,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:03,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:03,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:04,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:04,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:07,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:07,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 03:35:07,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:35:07,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3455 [2020-10-29 03:35:07,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:07,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:07,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:35:07,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 03:35:07,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:35:07,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:07,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:07,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:07,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:07,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:07,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:07,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:07,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:35:07,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:07,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:07,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:07,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:07,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:07,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:07,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 03:35:07,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:07,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:07,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:07,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:35:07,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:07,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:35:07,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:07,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:07,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:07,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:35:07,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:07,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:07,501 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 03:35:07,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146621434] [2020-10-29 03:35:07,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:07,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 03:35:07,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580751831] [2020-10-29 03:35:07,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:35:07,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:07,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:35:07,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:35:07,505 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand 5 states. [2020-10-29 03:35:07,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:07,641 INFO L93 Difference]: Finished difference Result 101 states and 120 transitions. [2020-10-29 03:35:07,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 03:35:07,641 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-10-29 03:35:07,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:07,642 INFO L225 Difference]: With dead ends: 101 [2020-10-29 03:35:07,643 INFO L226 Difference]: Without dead ends: 61 [2020-10-29 03:35:07,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:35:07,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-29 03:35:07,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2020-10-29 03:35:07,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-29 03:35:07,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2020-10-29 03:35:07,676 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 39 [2020-10-29 03:35:07,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:07,676 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2020-10-29 03:35:07,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:35:07,676 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2020-10-29 03:35:07,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 03:35:07,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:07,680 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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] [2020-10-29 03:35:07,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:35:07,681 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:07,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:07,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1953652376, now seen corresponding path program 5 times [2020-10-29 03:35:07,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:07,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819258259] [2020-10-29 03:35:07,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:07,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:07,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:07,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:07,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:07,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:07,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:12,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:12,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 03:35:12,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:35:12,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 03:35:12,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:12,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:12,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:35:12,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 03:35:12,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:35:12,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:12,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:12,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:12,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:12,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:12,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:12,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:12,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:35:12,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:12,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:12,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:12,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:12,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:12,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:12,816 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 03:35:12,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819258259] [2020-10-29 03:35:12,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:12,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:35:12,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518478613] [2020-10-29 03:35:12,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:35:12,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:12,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:35:12,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:35:12,819 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand 9 states. [2020-10-29 03:35:13,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:13,055 INFO L93 Difference]: Finished difference Result 125 states and 152 transitions. [2020-10-29 03:35:13,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:35:13,056 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-10-29 03:35:13,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:13,057 INFO L225 Difference]: With dead ends: 125 [2020-10-29 03:35:13,057 INFO L226 Difference]: Without dead ends: 81 [2020-10-29 03:35:13,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:35:13,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-29 03:35:13,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 77. [2020-10-29 03:35:13,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-29 03:35:13,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2020-10-29 03:35:13,083 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 45 [2020-10-29 03:35:13,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:13,084 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2020-10-29 03:35:13,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:35:13,084 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2020-10-29 03:35:13,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-29 03:35:13,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:13,092 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:13,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:35:13,093 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:13,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:13,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1151397714, now seen corresponding path program 6 times [2020-10-29 03:35:13,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:13,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343361816] [2020-10-29 03:35:13,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:13,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:13,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:13,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:13,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:13,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:18,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:18,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 03:35:18,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:35:18,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:35:18,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:18,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:18,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:35:18,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 03:35:18,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:35:18,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:18,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:18,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:18,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:18,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:18,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:18,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:18,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:35:18,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:18,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:18,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:18,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:18,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:18,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:18,240 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-29 03:35:18,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343361816] [2020-10-29 03:35:18,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:18,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:35:18,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978543157] [2020-10-29 03:35:18,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:35:18,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:18,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:35:18,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:35:18,243 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 10 states. [2020-10-29 03:35:18,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:18,539 INFO L93 Difference]: Finished difference Result 144 states and 156 transitions. [2020-10-29 03:35:18,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:35:18,540 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 71 [2020-10-29 03:35:18,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:18,541 INFO L225 Difference]: With dead ends: 144 [2020-10-29 03:35:18,541 INFO L226 Difference]: Without dead ends: 89 [2020-10-29 03:35:18,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:35:18,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-29 03:35:18,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 85. [2020-10-29 03:35:18,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-29 03:35:18,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions. [2020-10-29 03:35:18,566 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 71 [2020-10-29 03:35:18,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:18,566 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 90 transitions. [2020-10-29 03:35:18,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:35:18,566 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 90 transitions. [2020-10-29 03:35:18,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 03:35:18,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:18,569 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:18,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:35:18,569 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:18,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:18,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1306878298, now seen corresponding path program 7 times [2020-10-29 03:35:18,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:18,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376043192] [2020-10-29 03:35:18,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:18,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:18,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:18,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:18,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:23,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:23,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 03:35:23,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:35:23,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 03:35:23,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:23,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:23,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:35:23,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 03:35:23,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:35:23,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:23,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:23,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:23,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:23,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:23,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:23,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:23,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:35:23,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:23,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:23,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:23,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:23,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:23,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:23,742 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-29 03:35:23,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376043192] [2020-10-29 03:35:23,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:23,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:35:23,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211045054] [2020-10-29 03:35:23,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:35:23,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:23,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:35:23,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:35:23,745 INFO L87 Difference]: Start difference. First operand 85 states and 90 transitions. Second operand 11 states. [2020-10-29 03:35:24,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:24,052 INFO L93 Difference]: Finished difference Result 158 states and 170 transitions. [2020-10-29 03:35:24,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:35:24,053 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-10-29 03:35:24,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:24,054 INFO L225 Difference]: With dead ends: 158 [2020-10-29 03:35:24,054 INFO L226 Difference]: Without dead ends: 97 [2020-10-29 03:35:24,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:35:24,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-29 03:35:24,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2020-10-29 03:35:24,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-29 03:35:24,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 98 transitions. [2020-10-29 03:35:24,084 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 98 transitions. Word has length 79 [2020-10-29 03:35:24,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:24,086 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 98 transitions. [2020-10-29 03:35:24,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:35:24,086 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 98 transitions. [2020-10-29 03:35:24,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-29 03:35:24,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:24,088 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:24,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:35:24,088 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:24,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:24,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1793190754, now seen corresponding path program 8 times [2020-10-29 03:35:24,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:24,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453211990] [2020-10-29 03:35:24,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:24,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:24,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:24,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:24,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:29,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:29,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 03:35:29,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:35:29,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-29 03:35:29,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:29,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:29,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:35:29,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:35:29,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:35:29,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:35:29,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:29,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:29,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:29,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:29,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:29,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:35:29,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:29,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:29,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:29,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:29,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:29,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:29,308 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-10-29 03:35:29,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453211990] [2020-10-29 03:35:29,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:29,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:35:29,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797989171] [2020-10-29 03:35:29,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:35:29,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:29,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:35:29,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:35:29,311 INFO L87 Difference]: Start difference. First operand 93 states and 98 transitions. Second operand 12 states. [2020-10-29 03:35:29,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:29,638 INFO L93 Difference]: Finished difference Result 172 states and 184 transitions. [2020-10-29 03:35:29,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:35:29,639 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 87 [2020-10-29 03:35:29,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:29,640 INFO L225 Difference]: With dead ends: 172 [2020-10-29 03:35:29,640 INFO L226 Difference]: Without dead ends: 105 [2020-10-29 03:35:29,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:35:29,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-29 03:35:29,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 101. [2020-10-29 03:35:29,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-29 03:35:29,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 106 transitions. [2020-10-29 03:35:29,668 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 106 transitions. Word has length 87 [2020-10-29 03:35:29,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:29,669 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 106 transitions. [2020-10-29 03:35:29,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:35:29,669 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 106 transitions. [2020-10-29 03:35:29,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-29 03:35:29,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:29,671 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:29,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:35:29,671 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:29,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:29,672 INFO L82 PathProgramCache]: Analyzing trace with hash -2091814250, now seen corresponding path program 9 times [2020-10-29 03:35:29,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:29,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736119304] [2020-10-29 03:35:29,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:29,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:29,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:29,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:29,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:29,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:34,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:34,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 03:35:34,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:35:34,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:35:34,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:34,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:34,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:35:34,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 03:35:34,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:35:34,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:34,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:34,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:34,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:34,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:34,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:34,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:35:34,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:34,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:34,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:34,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:34,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:34,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:34,870 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2020-10-29 03:35:34,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736119304] [2020-10-29 03:35:34,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:34,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:35:34,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836216763] [2020-10-29 03:35:34,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:35:34,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:34,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:35:34,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:35:34,875 INFO L87 Difference]: Start difference. First operand 101 states and 106 transitions. Second operand 13 states. [2020-10-29 03:35:35,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:35,172 INFO L93 Difference]: Finished difference Result 186 states and 198 transitions. [2020-10-29 03:35:35,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:35:35,173 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 95 [2020-10-29 03:35:35,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:35,174 INFO L225 Difference]: With dead ends: 186 [2020-10-29 03:35:35,174 INFO L226 Difference]: Without dead ends: 113 [2020-10-29 03:35:35,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:35:35,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-29 03:35:35,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 109. [2020-10-29 03:35:35,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-29 03:35:35,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 114 transitions. [2020-10-29 03:35:35,200 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 114 transitions. Word has length 95 [2020-10-29 03:35:35,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:35,201 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 114 transitions. [2020-10-29 03:35:35,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:35:35,201 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 114 transitions. [2020-10-29 03:35:35,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 03:35:35,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:35,202 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:35,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:35:35,203 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:35,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:35,204 INFO L82 PathProgramCache]: Analyzing trace with hash 631027854, now seen corresponding path program 10 times [2020-10-29 03:35:35,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:35,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498765691] [2020-10-29 03:35:35,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:35,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:35,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:35,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:35,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:40,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:40,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 03:35:40,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:35:40,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 03:35:40,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:40,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:40,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:35:40,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-29 03:35:40,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:35:40,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:40,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:40,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:40,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:40,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:40,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:40,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:35:40,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:40,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:40,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:40,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:40,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:40,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:40,413 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2020-10-29 03:35:40,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498765691] [2020-10-29 03:35:40,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:40,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:35:40,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467489078] [2020-10-29 03:35:40,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:35:40,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:40,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:35:40,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:35:40,418 INFO L87 Difference]: Start difference. First operand 109 states and 114 transitions. Second operand 14 states. [2020-10-29 03:35:40,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:40,869 INFO L93 Difference]: Finished difference Result 200 states and 212 transitions. [2020-10-29 03:35:40,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:35:40,870 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 103 [2020-10-29 03:35:40,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:40,871 INFO L225 Difference]: With dead ends: 200 [2020-10-29 03:35:40,871 INFO L226 Difference]: Without dead ends: 121 [2020-10-29 03:35:40,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:35:40,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-29 03:35:40,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 117. [2020-10-29 03:35:40,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-29 03:35:40,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 122 transitions. [2020-10-29 03:35:40,904 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 122 transitions. Word has length 103 [2020-10-29 03:35:40,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:40,905 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 122 transitions. [2020-10-29 03:35:40,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:35:40,905 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 122 transitions. [2020-10-29 03:35:40,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-29 03:35:40,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:40,907 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:40,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:35:40,907 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:40,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:40,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1360533882, now seen corresponding path program 11 times [2020-10-29 03:35:40,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:40,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894965402] [2020-10-29 03:35:40,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:40,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:40,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:40,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:41,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:45,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:45,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-29 03:35:45,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:35:45,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:35:45,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:45,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:45,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:35:45,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:35:45,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:35:45,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:46,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:46,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:46,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:46,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:46,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:46,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:35:46,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:46,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:46,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:46,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:46,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:46,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:46,120 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2020-10-29 03:35:46,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894965402] [2020-10-29 03:35:46,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:46,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:35:46,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507907364] [2020-10-29 03:35:46,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:35:46,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:46,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:35:46,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:35:46,130 INFO L87 Difference]: Start difference. First operand 117 states and 122 transitions. Second operand 15 states. [2020-10-29 03:35:46,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:46,468 INFO L93 Difference]: Finished difference Result 214 states and 226 transitions. [2020-10-29 03:35:46,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:35:46,468 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 111 [2020-10-29 03:35:46,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:46,470 INFO L225 Difference]: With dead ends: 214 [2020-10-29 03:35:46,470 INFO L226 Difference]: Without dead ends: 129 [2020-10-29 03:35:46,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:35:46,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-29 03:35:46,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 125. [2020-10-29 03:35:46,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-29 03:35:46,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 130 transitions. [2020-10-29 03:35:46,499 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 130 transitions. Word has length 111 [2020-10-29 03:35:46,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:46,500 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 130 transitions. [2020-10-29 03:35:46,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:35:46,500 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 130 transitions. [2020-10-29 03:35:46,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-29 03:35:46,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:46,502 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:46,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:35:46,502 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:46,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:46,503 INFO L82 PathProgramCache]: Analyzing trace with hash -602211202, now seen corresponding path program 12 times [2020-10-29 03:35:46,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:46,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824957511] [2020-10-29 03:35:46,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:46,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:46,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:46,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:46,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:51,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:51,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 03:35:51,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:35:51,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 03:35:51,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:51,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:51,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:35:51,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-29 03:35:51,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:35:51,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:51,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:51,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:51,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:51,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:51,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:51,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:35:51,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:51,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:51,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:51,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:51,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:51,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:51,759 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2020-10-29 03:35:51,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824957511] [2020-10-29 03:35:51,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:51,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:35:51,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741253533] [2020-10-29 03:35:51,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:35:51,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:51,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:35:51,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:35:51,762 INFO L87 Difference]: Start difference. First operand 125 states and 130 transitions. Second operand 16 states. [2020-10-29 03:35:52,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:52,208 INFO L93 Difference]: Finished difference Result 228 states and 240 transitions. [2020-10-29 03:35:52,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:35:52,209 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 119 [2020-10-29 03:35:52,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:52,210 INFO L225 Difference]: With dead ends: 228 [2020-10-29 03:35:52,210 INFO L226 Difference]: Without dead ends: 137 [2020-10-29 03:35:52,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:35:52,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-29 03:35:52,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 133. [2020-10-29 03:35:52,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-29 03:35:52,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 138 transitions. [2020-10-29 03:35:52,237 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 138 transitions. Word has length 119 [2020-10-29 03:35:52,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:52,238 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 138 transitions. [2020-10-29 03:35:52,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:35:52,238 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 138 transitions. [2020-10-29 03:35:52,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-29 03:35:52,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:52,240 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:52,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:35:52,240 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:52,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:52,241 INFO L82 PathProgramCache]: Analyzing trace with hash -199361930, now seen corresponding path program 13 times [2020-10-29 03:35:52,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:52,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545179725] [2020-10-29 03:35:52,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:52,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:52,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:52,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:52,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:52,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:57,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:57,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 03:35:57,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:35:57,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-29 03:35:57,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:57,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:57,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:35:57,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 03:35:57,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:35:57,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:57,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:57,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:57,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:57,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:57,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:57,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:35:57,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:57,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:57,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:57,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:57,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:57,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:57,545 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2020-10-29 03:35:57,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545179725] [2020-10-29 03:35:57,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:57,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:35:57,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923877782] [2020-10-29 03:35:57,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:35:57,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:57,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:35:57,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:35:57,548 INFO L87 Difference]: Start difference. First operand 133 states and 138 transitions. Second operand 17 states. [2020-10-29 03:35:58,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:58,018 INFO L93 Difference]: Finished difference Result 242 states and 254 transitions. [2020-10-29 03:35:58,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:35:58,019 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 127 [2020-10-29 03:35:58,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:58,021 INFO L225 Difference]: With dead ends: 242 [2020-10-29 03:35:58,021 INFO L226 Difference]: Without dead ends: 145 [2020-10-29 03:35:58,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:35:58,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-29 03:35:58,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 141. [2020-10-29 03:35:58,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-29 03:35:58,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 146 transitions. [2020-10-29 03:35:58,050 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 146 transitions. Word has length 127 [2020-10-29 03:35:58,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:58,050 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 146 transitions. [2020-10-29 03:35:58,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:35:58,050 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 146 transitions. [2020-10-29 03:35:58,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-29 03:35:58,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:58,052 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:58,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:35:58,052 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:58,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:58,053 INFO L82 PathProgramCache]: Analyzing trace with hash -942088082, now seen corresponding path program 14 times [2020-10-29 03:35:58,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:58,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754895719] [2020-10-29 03:35:58,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:58,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:58,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:58,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:58,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:03,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:03,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 03:36:03,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:36:03,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-29 03:36:03,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:03,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:03,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:36:03,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:36:03,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:36:03,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:03,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:03,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:03,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:03,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:03,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:03,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:03,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:03,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:03,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:03,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:03,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:03,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:03,388 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2020-10-29 03:36:03,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754895719] [2020-10-29 03:36:03,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:03,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:36:03,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340239551] [2020-10-29 03:36:03,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:36:03,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:03,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:36:03,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:36:03,391 INFO L87 Difference]: Start difference. First operand 141 states and 146 transitions. Second operand 18 states. [2020-10-29 03:36:03,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:03,821 INFO L93 Difference]: Finished difference Result 256 states and 268 transitions. [2020-10-29 03:36:03,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:36:03,822 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 135 [2020-10-29 03:36:03,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:03,823 INFO L225 Difference]: With dead ends: 256 [2020-10-29 03:36:03,823 INFO L226 Difference]: Without dead ends: 153 [2020-10-29 03:36:03,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:36:03,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-29 03:36:03,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 149. [2020-10-29 03:36:03,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-29 03:36:03,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 154 transitions. [2020-10-29 03:36:03,852 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 154 transitions. Word has length 135 [2020-10-29 03:36:03,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:03,853 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 154 transitions. [2020-10-29 03:36:03,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:36:03,853 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 154 transitions. [2020-10-29 03:36:03,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-29 03:36:03,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:03,855 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:03,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:36:03,855 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:03,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:03,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1305235866, now seen corresponding path program 15 times [2020-10-29 03:36:03,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:03,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738010992] [2020-10-29 03:36:03,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:03,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:03,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:03,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:03,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:08,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:08,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-29 03:36:08,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:36:08,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 03:36:08,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:08,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:08,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:36:08,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-29 03:36:08,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:36:08,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:09,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:09,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:09,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:09,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:09,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:09,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:09,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:36:09,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:09,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:09,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:09,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:09,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:09,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:09,197 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2020-10-29 03:36:09,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738010992] [2020-10-29 03:36:09,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:09,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:36:09,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981842928] [2020-10-29 03:36:09,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:36:09,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:09,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:36:09,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:36:09,199 INFO L87 Difference]: Start difference. First operand 149 states and 154 transitions. Second operand 19 states. [2020-10-29 03:36:09,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:09,710 INFO L93 Difference]: Finished difference Result 270 states and 282 transitions. [2020-10-29 03:36:09,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:36:09,711 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 143 [2020-10-29 03:36:09,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:09,712 INFO L225 Difference]: With dead ends: 270 [2020-10-29 03:36:09,712 INFO L226 Difference]: Without dead ends: 161 [2020-10-29 03:36:09,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:36:09,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-29 03:36:09,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 157. [2020-10-29 03:36:09,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-29 03:36:09,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 162 transitions. [2020-10-29 03:36:09,739 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 162 transitions. Word has length 143 [2020-10-29 03:36:09,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:09,739 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 162 transitions. [2020-10-29 03:36:09,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:36:09,740 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 162 transitions. [2020-10-29 03:36:09,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-29 03:36:09,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:09,741 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:09,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:36:09,742 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:09,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:09,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1743362978, now seen corresponding path program 16 times [2020-10-29 03:36:09,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:09,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594985701] [2020-10-29 03:36:09,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:09,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:09,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:09,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:09,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:09,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:14,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:14,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-29 03:36:14,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:36:14,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-29 03:36:14,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:14,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:14,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:36:14,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-29 03:36:14,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:36:14,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:15,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:15,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:15,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:15,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:15,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:15,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:15,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:15,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:15,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:15,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:15,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:15,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:15,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:15,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2020-10-29 03:36:15,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594985701] [2020-10-29 03:36:15,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:15,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:36:15,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271230897] [2020-10-29 03:36:15,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:36:15,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:15,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:36:15,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:36:15,170 INFO L87 Difference]: Start difference. First operand 157 states and 162 transitions. Second operand 20 states. [2020-10-29 03:36:15,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:15,721 INFO L93 Difference]: Finished difference Result 284 states and 296 transitions. [2020-10-29 03:36:15,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:36:15,721 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 151 [2020-10-29 03:36:15,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:15,723 INFO L225 Difference]: With dead ends: 284 [2020-10-29 03:36:15,723 INFO L226 Difference]: Without dead ends: 169 [2020-10-29 03:36:15,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:36:15,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-29 03:36:15,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 165. [2020-10-29 03:36:15,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-29 03:36:15,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 170 transitions. [2020-10-29 03:36:15,751 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 170 transitions. Word has length 151 [2020-10-29 03:36:15,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:15,751 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 170 transitions. [2020-10-29 03:36:15,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:36:15,751 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 170 transitions. [2020-10-29 03:36:15,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-29 03:36:15,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:15,753 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:15,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:36:15,754 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:15,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:15,754 INFO L82 PathProgramCache]: Analyzing trace with hash -395771306, now seen corresponding path program 17 times [2020-10-29 03:36:15,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:15,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668900080] [2020-10-29 03:36:15,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:15,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:15,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:15,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:15,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:20,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:20,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-29 03:36:20,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:36:20,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5150 [2020-10-29 03:36:20,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:20,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:20,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:36:20,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:36:20,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:36:20,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:21,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:21,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:21,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:21,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:21,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:21,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:21,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:36:21,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:21,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:21,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:21,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:21,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:21,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:21,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 867 trivial. 0 not checked. [2020-10-29 03:36:21,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668900080] [2020-10-29 03:36:21,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:21,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:36:21,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927114752] [2020-10-29 03:36:21,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:36:21,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:21,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:36:21,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:36:21,282 INFO L87 Difference]: Start difference. First operand 165 states and 170 transitions. Second operand 21 states. [2020-10-29 03:36:21,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:21,741 INFO L93 Difference]: Finished difference Result 298 states and 310 transitions. [2020-10-29 03:36:21,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:36:21,742 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 159 [2020-10-29 03:36:21,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:21,744 INFO L225 Difference]: With dead ends: 298 [2020-10-29 03:36:21,744 INFO L226 Difference]: Without dead ends: 177 [2020-10-29 03:36:21,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:36:21,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-29 03:36:21,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 173. [2020-10-29 03:36:21,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-29 03:36:21,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 178 transitions. [2020-10-29 03:36:21,772 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 178 transitions. Word has length 159 [2020-10-29 03:36:21,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:21,773 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 178 transitions. [2020-10-29 03:36:21,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:36:21,773 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 178 transitions. [2020-10-29 03:36:21,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-29 03:36:21,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:21,774 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:21,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:36:21,774 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:21,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:21,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1676441522, now seen corresponding path program 18 times [2020-10-29 03:36:21,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:21,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236053431] [2020-10-29 03:36:21,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:21,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:21,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:21,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:21,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:26,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:26,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-29 03:36:26,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:36:26,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5135 [2020-10-29 03:36:26,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:26,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:26,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:36:26,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-29 03:36:26,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:36:26,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:27,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:27,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:27,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:27,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:27,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:27,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:27,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:27,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:27,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:27,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:27,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:27,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:27,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2020-10-29 03:36:27,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236053431] [2020-10-29 03:36:27,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:27,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:36:27,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832368877] [2020-10-29 03:36:27,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:36:27,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:27,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:36:27,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:36:27,305 INFO L87 Difference]: Start difference. First operand 173 states and 178 transitions. Second operand 22 states. [2020-10-29 03:36:27,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:27,913 INFO L93 Difference]: Finished difference Result 312 states and 324 transitions. [2020-10-29 03:36:27,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:36:27,914 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 167 [2020-10-29 03:36:27,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:27,915 INFO L225 Difference]: With dead ends: 312 [2020-10-29 03:36:27,915 INFO L226 Difference]: Without dead ends: 185 [2020-10-29 03:36:27,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:36:27,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-29 03:36:27,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 181. [2020-10-29 03:36:27,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-29 03:36:27,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 186 transitions. [2020-10-29 03:36:27,947 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 186 transitions. Word has length 167 [2020-10-29 03:36:27,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:27,948 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 186 transitions. [2020-10-29 03:36:27,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:36:27,948 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 186 transitions. [2020-10-29 03:36:27,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-29 03:36:27,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:27,949 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:27,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:36:27,951 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:27,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:27,952 INFO L82 PathProgramCache]: Analyzing trace with hash 905836102, now seen corresponding path program 19 times [2020-10-29 03:36:27,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:27,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839019548] [2020-10-29 03:36:27,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:27,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:27,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:28,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:28,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:28,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:33,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:33,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-29 03:36:33,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:36:33,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5088 [2020-10-29 03:36:33,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:33,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:33,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:36:33,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:36:33,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:36:33,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:33,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:33,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:33,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:33,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:33,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:33,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:33,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:33,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:33,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:33,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:33,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:33,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:33,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 1083 trivial. 0 not checked. [2020-10-29 03:36:33,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839019548] [2020-10-29 03:36:33,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:33,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:36:33,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105334674] [2020-10-29 03:36:33,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:36:33,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:33,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:36:33,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:36:33,470 INFO L87 Difference]: Start difference. First operand 181 states and 186 transitions. Second operand 23 states. [2020-10-29 03:36:34,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:34,121 INFO L93 Difference]: Finished difference Result 326 states and 338 transitions. [2020-10-29 03:36:34,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:36:34,122 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 175 [2020-10-29 03:36:34,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:34,123 INFO L225 Difference]: With dead ends: 326 [2020-10-29 03:36:34,123 INFO L226 Difference]: Without dead ends: 193 [2020-10-29 03:36:34,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:36:34,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-29 03:36:34,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 189. [2020-10-29 03:36:34,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-29 03:36:34,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 194 transitions. [2020-10-29 03:36:34,159 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 194 transitions. Word has length 175 [2020-10-29 03:36:34,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:34,159 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 194 transitions. [2020-10-29 03:36:34,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:36:34,159 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 194 transitions. [2020-10-29 03:36:34,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-29 03:36:34,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:34,160 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:34,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:36:34,161 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:34,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:34,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1022342082, now seen corresponding path program 20 times [2020-10-29 03:36:34,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:34,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833833185] [2020-10-29 03:36:34,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:34,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:34,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:34,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:34,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:39,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:39,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-29 03:36:39,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:36:39,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5236 [2020-10-29 03:36:39,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:39,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:39,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:36:39,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-29 03:36:39,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:36:39,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:39,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:39,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:39,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:39,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:39,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:39,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:36:39,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:39,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:39,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:39,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:39,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:39,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:39,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-10-29 03:36:39,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833833185] [2020-10-29 03:36:39,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:39,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:36:39,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720708176] [2020-10-29 03:36:39,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:36:39,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:39,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:36:39,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:36:39,990 INFO L87 Difference]: Start difference. First operand 189 states and 194 transitions. Second operand 24 states. [2020-10-29 03:36:40,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:40,615 INFO L93 Difference]: Finished difference Result 340 states and 352 transitions. [2020-10-29 03:36:40,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:36:40,616 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 183 [2020-10-29 03:36:40,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:40,618 INFO L225 Difference]: With dead ends: 340 [2020-10-29 03:36:40,618 INFO L226 Difference]: Without dead ends: 201 [2020-10-29 03:36:40,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:36:40,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-29 03:36:40,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 197. [2020-10-29 03:36:40,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-29 03:36:40,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 202 transitions. [2020-10-29 03:36:40,653 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 202 transitions. Word has length 183 [2020-10-29 03:36:40,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:40,653 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 202 transitions. [2020-10-29 03:36:40,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:36:40,653 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 202 transitions. [2020-10-29 03:36:40,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-29 03:36:40,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:40,656 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:40,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:36:40,656 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:40,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:40,657 INFO L82 PathProgramCache]: Analyzing trace with hash -634222026, now seen corresponding path program 21 times [2020-10-29 03:36:40,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:40,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914599928] [2020-10-29 03:36:40,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:40,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:40,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:40,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:40,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:46,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:46,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 03:36:46,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:36:46,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5687 [2020-10-29 03:36:46,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:46,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:46,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:36:46,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-29 03:36:46,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:36:46,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:46,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:46,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:46,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:46,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:46,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:46,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:46,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:36:46,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:46,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:46,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:46,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:46,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:46,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:46,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 1323 trivial. 0 not checked. [2020-10-29 03:36:46,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914599928] [2020-10-29 03:36:46,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:46,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:36:46,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147762132] [2020-10-29 03:36:46,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:36:46,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:46,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:36:46,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:36:46,869 INFO L87 Difference]: Start difference. First operand 197 states and 202 transitions. Second operand 25 states. [2020-10-29 03:36:47,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:47,492 INFO L93 Difference]: Finished difference Result 354 states and 366 transitions. [2020-10-29 03:36:47,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:36:47,493 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 191 [2020-10-29 03:36:47,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:47,495 INFO L225 Difference]: With dead ends: 354 [2020-10-29 03:36:47,495 INFO L226 Difference]: Without dead ends: 209 [2020-10-29 03:36:47,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:36:47,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-29 03:36:47,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 205. [2020-10-29 03:36:47,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-29 03:36:47,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 210 transitions. [2020-10-29 03:36:47,524 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 210 transitions. Word has length 191 [2020-10-29 03:36:47,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:47,524 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 210 transitions. [2020-10-29 03:36:47,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:36:47,524 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 210 transitions. [2020-10-29 03:36:47,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-29 03:36:47,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:47,525 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:47,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:36:47,526 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:47,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:47,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1672695762, now seen corresponding path program 22 times [2020-10-29 03:36:47,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:47,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579913473] [2020-10-29 03:36:47,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:47,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:47,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:47,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:47,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:52,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:52,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-29 03:36:52,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:36:52,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5144 [2020-10-29 03:36:52,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:52,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:52,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:36:52,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:36:52,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:36:52,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:53,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:53,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:53,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:53,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:53,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:53,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:53,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:36:53,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:53,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:53,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:53,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:53,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:53,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:53,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2020-10-29 03:36:53,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579913473] [2020-10-29 03:36:53,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:53,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:36:53,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963271478] [2020-10-29 03:36:53,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:36:53,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:53,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:36:53,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:36:53,203 INFO L87 Difference]: Start difference. First operand 205 states and 210 transitions. Second operand 26 states. [2020-10-29 03:36:53,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:53,841 INFO L93 Difference]: Finished difference Result 368 states and 380 transitions. [2020-10-29 03:36:53,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:36:53,842 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 199 [2020-10-29 03:36:53,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:53,844 INFO L225 Difference]: With dead ends: 368 [2020-10-29 03:36:53,844 INFO L226 Difference]: Without dead ends: 217 [2020-10-29 03:36:53,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:36:53,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-29 03:36:53,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 213. [2020-10-29 03:36:53,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-10-29 03:36:53,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 218 transitions. [2020-10-29 03:36:53,871 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 218 transitions. Word has length 199 [2020-10-29 03:36:53,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:53,871 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 218 transitions. [2020-10-29 03:36:53,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:36:53,871 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 218 transitions. [2020-10-29 03:36:53,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-29 03:36:53,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:53,872 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:53,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:36:53,872 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:53,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:53,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1270432218, now seen corresponding path program 23 times [2020-10-29 03:36:53,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:53,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969781964] [2020-10-29 03:36:53,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:53,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:53,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:53,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:53,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:54,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:59,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:59,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-29 03:36:59,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:36:59,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5202 [2020-10-29 03:36:59,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:59,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:59,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:36:59,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:36:59,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:36:59,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:59,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:59,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:59,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:59,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:59,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:59,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:59,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:59,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:59,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:59,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:59,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:59,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:59,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:59,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 1587 trivial. 0 not checked. [2020-10-29 03:36:59,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969781964] [2020-10-29 03:36:59,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:59,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:36:59,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979386650] [2020-10-29 03:36:59,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:36:59,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:59,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:36:59,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:36:59,624 INFO L87 Difference]: Start difference. First operand 213 states and 218 transitions. Second operand 27 states. [2020-10-29 03:37:00,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:00,278 INFO L93 Difference]: Finished difference Result 382 states and 394 transitions. [2020-10-29 03:37:00,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:37:00,279 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 207 [2020-10-29 03:37:00,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:00,281 INFO L225 Difference]: With dead ends: 382 [2020-10-29 03:37:00,281 INFO L226 Difference]: Without dead ends: 225 [2020-10-29 03:37:00,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:37:00,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-29 03:37:00,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 221. [2020-10-29 03:37:00,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-29 03:37:00,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 226 transitions. [2020-10-29 03:37:00,316 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 226 transitions. Word has length 207 [2020-10-29 03:37:00,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:00,316 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 226 transitions. [2020-10-29 03:37:00,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:37:00,317 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 226 transitions. [2020-10-29 03:37:00,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-29 03:37:00,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:00,318 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:00,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:37:00,319 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:00,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:00,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1460188190, now seen corresponding path program 24 times [2020-10-29 03:37:00,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:00,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980949574] [2020-10-29 03:37:00,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:00,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:00,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:00,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:00,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:05,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:05,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-29 03:37:05,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:37:05,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5337 [2020-10-29 03:37:05,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:05,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:05,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:37:05,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-29 03:37:05,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:37:05,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:06,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:06,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:06,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:06,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:06,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:06,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:06,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:37:06,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:06,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:06,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:06,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:06,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:06,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:06,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2020-10-29 03:37:06,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980949574] [2020-10-29 03:37:06,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:06,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:37:06,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141995826] [2020-10-29 03:37:06,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:37:06,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:06,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:37:06,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:37:06,277 INFO L87 Difference]: Start difference. First operand 221 states and 226 transitions. Second operand 28 states. [2020-10-29 03:37:07,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:07,074 INFO L93 Difference]: Finished difference Result 396 states and 408 transitions. [2020-10-29 03:37:07,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:37:07,074 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 215 [2020-10-29 03:37:07,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:07,076 INFO L225 Difference]: With dead ends: 396 [2020-10-29 03:37:07,076 INFO L226 Difference]: Without dead ends: 233 [2020-10-29 03:37:07,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:37:07,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-29 03:37:07,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 229. [2020-10-29 03:37:07,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-29 03:37:07,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 234 transitions. [2020-10-29 03:37:07,114 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 234 transitions. Word has length 215 [2020-10-29 03:37:07,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:07,114 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 234 transitions. [2020-10-29 03:37:07,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:37:07,115 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 234 transitions. [2020-10-29 03:37:07,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-29 03:37:07,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:07,116 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:07,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:37:07,116 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:07,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:07,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1132106262, now seen corresponding path program 25 times [2020-10-29 03:37:07,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:07,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54022031] [2020-10-29 03:37:07,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:07,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:07,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:07,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:07,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:07,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:12,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:12,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-29 03:37:12,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:37:12,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5487 [2020-10-29 03:37:12,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:12,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:12,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:37:12,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-29 03:37:12,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:37:12,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:13,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:13,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:13,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:13,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:13,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:13,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:37:13,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:13,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:13,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:13,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:13,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:13,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:13,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 1875 trivial. 0 not checked. [2020-10-29 03:37:13,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54022031] [2020-10-29 03:37:13,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:13,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 03:37:13,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301718225] [2020-10-29 03:37:13,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 03:37:13,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:13,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 03:37:13,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:37:13,271 INFO L87 Difference]: Start difference. First operand 229 states and 234 transitions. Second operand 29 states. [2020-10-29 03:37:14,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:14,116 INFO L93 Difference]: Finished difference Result 410 states and 422 transitions. [2020-10-29 03:37:14,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:37:14,117 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 223 [2020-10-29 03:37:14,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:14,119 INFO L225 Difference]: With dead ends: 410 [2020-10-29 03:37:14,119 INFO L226 Difference]: Without dead ends: 241 [2020-10-29 03:37:14,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:37:14,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-10-29 03:37:14,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 237. [2020-10-29 03:37:14,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-10-29 03:37:14,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 242 transitions. [2020-10-29 03:37:14,157 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 242 transitions. Word has length 223 [2020-10-29 03:37:14,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:14,158 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 242 transitions. [2020-10-29 03:37:14,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 03:37:14,158 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 242 transitions. [2020-10-29 03:37:14,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-29 03:37:14,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:14,160 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:14,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:37:14,160 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:14,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:14,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1031514098, now seen corresponding path program 26 times [2020-10-29 03:37:14,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:14,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829958412] [2020-10-29 03:37:14,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:14,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:14,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:14,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:14,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:19,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:19,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-29 03:37:19,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:37:19,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5315 [2020-10-29 03:37:19,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:19,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:19,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:37:19,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-29 03:37:19,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:37:19,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:20,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:20,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:20,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:20,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:20,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:20,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:37:20,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:20,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:20,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:20,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:20,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:20,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:20,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2020-10-29 03:37:20,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829958412] [2020-10-29 03:37:20,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:20,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 03:37:20,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932720720] [2020-10-29 03:37:20,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 03:37:20,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:20,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 03:37:20,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:37:20,168 INFO L87 Difference]: Start difference. First operand 237 states and 242 transitions. Second operand 30 states. [2020-10-29 03:37:21,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:21,037 INFO L93 Difference]: Finished difference Result 424 states and 436 transitions. [2020-10-29 03:37:21,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:37:21,037 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 231 [2020-10-29 03:37:21,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:21,039 INFO L225 Difference]: With dead ends: 424 [2020-10-29 03:37:21,040 INFO L226 Difference]: Without dead ends: 249 [2020-10-29 03:37:21,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:37:21,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-10-29 03:37:21,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 245. [2020-10-29 03:37:21,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-10-29 03:37:21,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 250 transitions. [2020-10-29 03:37:21,071 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 250 transitions. Word has length 231 [2020-10-29 03:37:21,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:21,072 INFO L481 AbstractCegarLoop]: Abstraction has 245 states and 250 transitions. [2020-10-29 03:37:21,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 03:37:21,072 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 250 transitions. [2020-10-29 03:37:21,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-29 03:37:21,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:21,073 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:21,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:37:21,073 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:21,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:21,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1492253178, now seen corresponding path program 27 times [2020-10-29 03:37:21,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:21,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577544541] [2020-10-29 03:37:21,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:21,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:21,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:21,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:21,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:26,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:26,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-29 03:37:26,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:37:26,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5554 [2020-10-29 03:37:26,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:26,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:26,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:37:26,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 03:37:26,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:37:26,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:27,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:27,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:27,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:27,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:27,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:27,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:27,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:37:27,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:27,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:27,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:27,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:27,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:27,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:27,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2916 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2020-10-29 03:37:27,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577544541] [2020-10-29 03:37:27,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:27,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 03:37:27,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710416751] [2020-10-29 03:37:27,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 03:37:27,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:27,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 03:37:27,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:37:27,323 INFO L87 Difference]: Start difference. First operand 245 states and 250 transitions. Second operand 31 states. [2020-10-29 03:37:28,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:28,203 INFO L93 Difference]: Finished difference Result 438 states and 450 transitions. [2020-10-29 03:37:28,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 03:37:28,204 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 239 [2020-10-29 03:37:28,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:28,206 INFO L225 Difference]: With dead ends: 438 [2020-10-29 03:37:28,206 INFO L226 Difference]: Without dead ends: 257 [2020-10-29 03:37:28,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:37:28,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-10-29 03:37:28,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 253. [2020-10-29 03:37:28,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-10-29 03:37:28,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 258 transitions. [2020-10-29 03:37:28,246 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 258 transitions. Word has length 239 [2020-10-29 03:37:28,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:28,246 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 258 transitions. [2020-10-29 03:37:28,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 03:37:28,246 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 258 transitions. [2020-10-29 03:37:28,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-29 03:37:28,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:28,248 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:28,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 03:37:28,248 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:28,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:28,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1308597246, now seen corresponding path program 28 times [2020-10-29 03:37:28,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:28,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733733641] [2020-10-29 03:37:28,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:28,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:28,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:28,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:28,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:33,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:33,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-29 03:37:33,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:37:33,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5182 [2020-10-29 03:37:33,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:33,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:33,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:37:33,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-29 03:37:33,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:37:33,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:34,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:34,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:34,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:34,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:34,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:34,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:34,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:37:34,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:34,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:34,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:34,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:34,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:34,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:34,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 2352 trivial. 0 not checked. [2020-10-29 03:37:34,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733733641] [2020-10-29 03:37:34,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:34,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 03:37:34,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457716743] [2020-10-29 03:37:34,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 03:37:34,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:34,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 03:37:34,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:37:34,195 INFO L87 Difference]: Start difference. First operand 253 states and 258 transitions. Second operand 32 states. [2020-10-29 03:37:35,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:35,008 INFO L93 Difference]: Finished difference Result 452 states and 464 transitions. [2020-10-29 03:37:35,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 03:37:35,009 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 247 [2020-10-29 03:37:35,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:35,011 INFO L225 Difference]: With dead ends: 452 [2020-10-29 03:37:35,011 INFO L226 Difference]: Without dead ends: 265 [2020-10-29 03:37:35,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:37:35,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-10-29 03:37:35,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 261. [2020-10-29 03:37:35,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-29 03:37:35,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 266 transitions. [2020-10-29 03:37:35,042 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 266 transitions. Word has length 247 [2020-10-29 03:37:35,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:35,042 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 266 transitions. [2020-10-29 03:37:35,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 03:37:35,042 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 266 transitions. [2020-10-29 03:37:35,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-29 03:37:35,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:35,044 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:35,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 03:37:35,044 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:35,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:35,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1639900682, now seen corresponding path program 29 times [2020-10-29 03:37:35,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:35,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553692967] [2020-10-29 03:37:35,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:35,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:35,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:35,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:35,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:35,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:40,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:40,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-29 03:37:40,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:37:40,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5642 [2020-10-29 03:37:40,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:40,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:40,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:37:40,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-29 03:37:40,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:37:40,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:41,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:41,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:41,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:41,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:41,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:41,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:41,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:37:41,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:41,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:41,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:41,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:41,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:41,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:41,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3364 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 2523 trivial. 0 not checked. [2020-10-29 03:37:41,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553692967] [2020-10-29 03:37:41,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:41,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-29 03:37:41,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507388702] [2020-10-29 03:37:41,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-29 03:37:41,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:41,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-29 03:37:41,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:37:41,479 INFO L87 Difference]: Start difference. First operand 261 states and 266 transitions. Second operand 33 states. [2020-10-29 03:37:42,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:42,415 INFO L93 Difference]: Finished difference Result 466 states and 478 transitions. [2020-10-29 03:37:42,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 03:37:42,416 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 255 [2020-10-29 03:37:42,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:42,418 INFO L225 Difference]: With dead ends: 466 [2020-10-29 03:37:42,418 INFO L226 Difference]: Without dead ends: 273 [2020-10-29 03:37:42,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:37:42,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-29 03:37:42,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 269. [2020-10-29 03:37:42,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-29 03:37:42,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 274 transitions. [2020-10-29 03:37:42,458 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 274 transitions. Word has length 255 [2020-10-29 03:37:42,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:42,458 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 274 transitions. [2020-10-29 03:37:42,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-29 03:37:42,458 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 274 transitions. [2020-10-29 03:37:42,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-29 03:37:42,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:42,460 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:42,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 03:37:42,460 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:42,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:42,461 INFO L82 PathProgramCache]: Analyzing trace with hash 146440174, now seen corresponding path program 30 times [2020-10-29 03:37:42,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:42,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303349375] [2020-10-29 03:37:42,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:42,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:42,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:42,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:42,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:42,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:47,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:47,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-29 03:37:47,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:37:47,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 03:37:47,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:47,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:47,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:37:47,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 137 [2020-10-29 03:37:47,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 03:37:47,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:48,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:48,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:48,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:48,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:48,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:48,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:37:48,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:48,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:48,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:48,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:48,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:48,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:48,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 2700 trivial. 0 not checked. [2020-10-29 03:37:48,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303349375] [2020-10-29 03:37:48,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:48,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-29 03:37:48,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120292408] [2020-10-29 03:37:48,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-29 03:37:48,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:48,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-29 03:37:48,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:37:48,328 INFO L87 Difference]: Start difference. First operand 269 states and 274 transitions. Second operand 34 states. [2020-10-29 03:37:49,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:49,165 INFO L93 Difference]: Finished difference Result 480 states and 492 transitions. [2020-10-29 03:37:49,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 03:37:49,166 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 263 [2020-10-29 03:37:49,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:49,169 INFO L225 Difference]: With dead ends: 480 [2020-10-29 03:37:49,169 INFO L226 Difference]: Without dead ends: 281 [2020-10-29 03:37:49,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:37:49,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-10-29 03:37:49,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 277. [2020-10-29 03:37:49,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-29 03:37:49,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 282 transitions. [2020-10-29 03:37:49,213 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 282 transitions. Word has length 263 [2020-10-29 03:37:49,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:49,214 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 282 transitions. [2020-10-29 03:37:49,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-29 03:37:49,214 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 282 transitions. [2020-10-29 03:37:49,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-29 03:37:49,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:49,216 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:49,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 03:37:49,216 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:49,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:49,217 INFO L82 PathProgramCache]: Analyzing trace with hash -2007773722, now seen corresponding path program 31 times [2020-10-29 03:37:49,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:49,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259449609] [2020-10-29 03:37:49,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:49,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:49,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:49,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:49,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:54,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:54,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-29 03:37:54,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:37:54,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5137 [2020-10-29 03:37:54,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:54,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:54,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 03:37:54,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 141 [2020-10-29 03:37:54,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 03:37:54,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:55,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:55,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:55,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:55,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:55,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:55,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:37:55,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:55,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:55,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:55,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:55,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:55,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:55,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3844 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 2883 trivial. 0 not checked. [2020-10-29 03:37:55,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259449609] [2020-10-29 03:37:55,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:55,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-29 03:37:55,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221824598] [2020-10-29 03:37:55,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-29 03:37:55,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:55,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-29 03:37:55,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:37:55,286 INFO L87 Difference]: Start difference. First operand 277 states and 282 transitions. Second operand 35 states. [2020-10-29 03:37:56,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:56,202 INFO L93 Difference]: Finished difference Result 494 states and 506 transitions. [2020-10-29 03:37:56,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-29 03:37:56,203 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 271 [2020-10-29 03:37:56,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:56,205 INFO L225 Difference]: With dead ends: 494 [2020-10-29 03:37:56,206 INFO L226 Difference]: Without dead ends: 289 [2020-10-29 03:37:56,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:37:56,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-10-29 03:37:56,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 285. [2020-10-29 03:37:56,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2020-10-29 03:37:56,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 290 transitions. [2020-10-29 03:37:56,240 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 290 transitions. Word has length 271 [2020-10-29 03:37:56,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:56,240 INFO L481 AbstractCegarLoop]: Abstraction has 285 states and 290 transitions. [2020-10-29 03:37:56,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-29 03:37:56,241 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 290 transitions. [2020-10-29 03:37:56,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-29 03:37:56,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:56,242 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:56,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 03:37:56,242 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:56,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:56,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1577778210, now seen corresponding path program 32 times [2020-10-29 03:37:56,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:56,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644078261] [2020-10-29 03:37:56,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:56,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:56,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:56,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:56,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:01,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:01,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-29 03:38:01,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:38:01,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5160 [2020-10-29 03:38:01,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:01,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:01,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-29 03:38:01,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-29 03:38:01,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 03:38:01,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:02,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:02,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:02,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:02,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:02,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:02,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:38:02,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:02,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:02,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:02,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:02,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:02,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:02,350 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 3072 trivial. 0 not checked. [2020-10-29 03:38:02,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644078261] [2020-10-29 03:38:02,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:02,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-29 03:38:02,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135876207] [2020-10-29 03:38:02,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-29 03:38:02,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:02,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-29 03:38:02,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:38:02,352 INFO L87 Difference]: Start difference. First operand 285 states and 290 transitions. Second operand 36 states. [2020-10-29 03:38:03,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:03,308 INFO L93 Difference]: Finished difference Result 508 states and 520 transitions. [2020-10-29 03:38:03,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-29 03:38:03,309 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 279 [2020-10-29 03:38:03,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:03,312 INFO L225 Difference]: With dead ends: 508 [2020-10-29 03:38:03,312 INFO L226 Difference]: Without dead ends: 297 [2020-10-29 03:38:03,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:38:03,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-10-29 03:38:03,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 293. [2020-10-29 03:38:03,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-10-29 03:38:03,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 298 transitions. [2020-10-29 03:38:03,354 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 298 transitions. Word has length 279 [2020-10-29 03:38:03,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:03,355 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 298 transitions. [2020-10-29 03:38:03,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-29 03:38:03,355 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 298 transitions. [2020-10-29 03:38:03,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-29 03:38:03,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:03,357 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:03,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 03:38:03,357 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:03,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:03,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1686512086, now seen corresponding path program 33 times [2020-10-29 03:38:03,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:03,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837220629] [2020-10-29 03:38:03,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:03,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:03,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:03,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:03,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking...