/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-crafted/zero_sum_m5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:26:55,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:26:55,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:26:55,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:26:55,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:26:55,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:26:55,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:26:55,053 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:26:55,055 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:26:55,056 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:26:55,058 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:26:55,059 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:26:55,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:26:55,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:26:55,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:26:55,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:26:55,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:26:55,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:26:55,069 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:26:55,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:26:55,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:26:55,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:26:55,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:26:55,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:26:55,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:26:55,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:26:55,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:26:55,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:26:55,104 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:26:55,105 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:26:55,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:26:55,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:26:55,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:26:55,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:26:55,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:26:55,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:26:55,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:26:55,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:26:55,112 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:26:55,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:26:55,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:26:55,115 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 03:26:55,144 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:26:55,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:26:55,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:26:55,146 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:26:55,146 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:26:55,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:26:55,147 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:26:55,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:26:55,148 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:26:55,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:26:55,148 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:26:55,148 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:26:55,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:26:55,149 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:26:55,149 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:26:55,149 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:26:55,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:26:55,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:26:55,150 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:26:55,150 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:26:55,151 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:26:55,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:26:55,151 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:26:55,152 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:26:55,152 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:26:55,152 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:26:55,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:26:55,153 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:26:55,153 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:26:55,153 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:26:55,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:26:55,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:26:55,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:26:55,540 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:26:55,541 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:26:55,542 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum_m5.c [2020-10-29 03:26:55,623 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b185ba2a3/206eea0f69254fc7bef86ddb783aa757/FLAG9403ef2d9 [2020-10-29 03:26:56,269 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:26:56,270 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/zero_sum_m5.c [2020-10-29 03:26:56,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b185ba2a3/206eea0f69254fc7bef86ddb783aa757/FLAG9403ef2d9 [2020-10-29 03:26:56,297 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b185ba2a3/206eea0f69254fc7bef86ddb783aa757 [2020-10-29 03:26:56,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:26:56,307 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:26:56,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:26:56,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:26:56,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:26:56,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:26:56" (1/1) ... [2020-10-29 03:26:56,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f76bfbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:26:56, skipping insertion in model container [2020-10-29 03:26:56,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:26:56" (1/1) ... [2020-10-29 03:26:56,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:26:56,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:26:56,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:26:56,602 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:26:56,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:26:56,646 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:26:56,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:26:56 WrapperNode [2020-10-29 03:26:56,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:26:56,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:26:56,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:26:56,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:26:56,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:26:56" (1/1) ... [2020-10-29 03:26:56,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:26:56" (1/1) ... [2020-10-29 03:26:56,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:26:56" (1/1) ... [2020-10-29 03:26:56,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:26:56" (1/1) ... [2020-10-29 03:26:56,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:26:56" (1/1) ... [2020-10-29 03:26:56,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:26:56" (1/1) ... [2020-10-29 03:26:56,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:26:56" (1/1) ... [2020-10-29 03:26:56,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:26:56,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:26:56,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:26:56,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:26:56,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:26:56" (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 03:26:56,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:26:56,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:26:56,804 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:26:56,804 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 03:26:56,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:26:56,804 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:26:56,805 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:26:56,805 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:26:56,805 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:26:56,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:26:56,805 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 03:26:56,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:26:56,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2020-10-29 03:26:56,806 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:26:56,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:26:56,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:26:56,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:26:56,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:26:56,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:26:56,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:26:57,356 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:26:57,357 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-29 03:26:57,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:26:57 BoogieIcfgContainer [2020-10-29 03:26:57,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:26:57,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:26:57,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:26:57,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:26:57,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:26:56" (1/3) ... [2020-10-29 03:26:57,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2186c189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:26:57, skipping insertion in model container [2020-10-29 03:26:57,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:26:56" (2/3) ... [2020-10-29 03:26:57,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2186c189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:26:57, skipping insertion in model container [2020-10-29 03:26:57,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:26:57" (3/3) ... [2020-10-29 03:26:57,373 INFO L111 eAbstractionObserver]: Analyzing ICFG zero_sum_m5.c [2020-10-29 03:26:57,386 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:26:57,392 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:26:57,408 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:26:57,453 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:26:57,453 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:26:57,453 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:26:57,453 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:26:57,454 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:26:57,454 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:26:57,454 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:26:57,454 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:26:57,477 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-10-29 03:26:57,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 03:26:57,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:26:57,497 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:26:57,497 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:26:57,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:26:57,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1682014752, now seen corresponding path program 1 times [2020-10-29 03:26:57,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:26:57,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506322779] [2020-10-29 03:26:57,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:26:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:26:57,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:57,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:57,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:57,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:58,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:58,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:58,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:58,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:58,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:58,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:58,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:59,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:02,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:02,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 03:27:02,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 03:27:02,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:27:02,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:02,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:02,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:27:02,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:27:02,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:27:02,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:27:02,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:02,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:02,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:02,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:02,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:02,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 03:27:02,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:02,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:02,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:02,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:02,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:02,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:27:02,936 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 03:27:02,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506322779] [2020-10-29 03:27:02,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:27:02,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 03:27:02,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853498449] [2020-10-29 03:27:02,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:27:02,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:02,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:27:02,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:27:02,967 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 5 states. [2020-10-29 03:27:03,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:03,363 INFO L93 Difference]: Finished difference Result 125 states and 189 transitions. [2020-10-29 03:27:03,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:27:03,365 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-10-29 03:27:03,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:03,373 INFO L225 Difference]: With dead ends: 125 [2020-10-29 03:27:03,373 INFO L226 Difference]: Without dead ends: 65 [2020-10-29 03:27:03,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:27:03,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-29 03:27:03,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 55. [2020-10-29 03:27:03,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 03:27:03,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2020-10-29 03:27:03,487 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 33 [2020-10-29 03:27:03,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:03,488 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2020-10-29 03:27:03,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:27:03,488 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2020-10-29 03:27:03,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 03:27:03,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:03,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:27:03,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:27:03,491 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:03,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:03,492 INFO L82 PathProgramCache]: Analyzing trace with hash 419710214, now seen corresponding path program 1 times [2020-10-29 03:27:03,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:03,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109158892] [2020-10-29 03:27:03,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:03,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:03,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:03,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:03,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:03,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:03,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:03,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:04,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:06,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:08,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:08,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 03:27:08,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:27:08,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:27:08,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:08,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:08,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:27:08,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:27:08,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:27:08,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:08,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:08,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:08,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:08,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:08,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:08,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:27:08,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:08,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:08,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:08,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:08,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:08,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:08,608 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 03:27:08,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109158892] [2020-10-29 03:27:08,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:27:08,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:27:08,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513109488] [2020-10-29 03:27:08,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:27:08,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:08,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:27:08,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:27:08,615 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand 6 states. [2020-10-29 03:27:08,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:08,902 INFO L93 Difference]: Finished difference Result 117 states and 145 transitions. [2020-10-29 03:27:08,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:27:08,903 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-10-29 03:27:08,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:08,904 INFO L225 Difference]: With dead ends: 117 [2020-10-29 03:27:08,905 INFO L226 Difference]: Without dead ends: 75 [2020-10-29 03:27:08,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:27:08,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-29 03:27:08,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-10-29 03:27:08,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-29 03:27:08,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2020-10-29 03:27:08,924 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 53 [2020-10-29 03:27:08,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:08,924 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2020-10-29 03:27:08,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:27:08,925 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2020-10-29 03:27:08,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-29 03:27:08,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:08,930 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:27:08,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:27:08,930 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:08,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:08,931 INFO L82 PathProgramCache]: Analyzing trace with hash -408227750, now seen corresponding path program 2 times [2020-10-29 03:27:08,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:08,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982788398] [2020-10-29 03:27:08,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:08,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:09,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:09,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:11,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:13,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:14,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:14,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 03:27:14,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:27:14,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5930 [2020-10-29 03:27:14,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:14,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:14,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-29 03:27:14,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:27:14,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 03:27:14,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:17,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:17,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:17,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:17,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:17,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:17,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:27:17,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:17,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:17,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:17,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:17,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:17,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:17,221 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:27:17,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982788398] [2020-10-29 03:27:17,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:27:17,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-29 03:27:17,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508829589] [2020-10-29 03:27:17,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-29 03:27:17,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:17,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-29 03:27:17,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1547, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 03:27:17,225 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 41 states. [2020-10-29 03:27:19,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:19,559 INFO L93 Difference]: Finished difference Result 141 states and 160 transitions. [2020-10-29 03:27:19,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-29 03:27:19,560 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 73 [2020-10-29 03:27:19,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:19,562 INFO L225 Difference]: With dead ends: 141 [2020-10-29 03:27:19,563 INFO L226 Difference]: Without dead ends: 135 [2020-10-29 03:27:19,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=107, Invalid=1785, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 03:27:19,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-29 03:27:19,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 128. [2020-10-29 03:27:19,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-29 03:27:19,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 147 transitions. [2020-10-29 03:27:19,584 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 147 transitions. Word has length 73 [2020-10-29 03:27:19,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:19,584 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 147 transitions. [2020-10-29 03:27:19,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-29 03:27:19,585 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 147 transitions. [2020-10-29 03:27:19,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 03:27:19,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:19,587 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:27:19,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:27:19,587 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:19,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:19,588 INFO L82 PathProgramCache]: Analyzing trace with hash -465093092, now seen corresponding path program 3 times [2020-10-29 03:27:19,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:19,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795098988] [2020-10-29 03:27:19,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:19,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:19,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:19,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:19,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:19,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:19,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:19,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:22,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:24,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:24,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 03:27:24,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:27:24,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 03:27:24,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:24,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:24,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:27:24,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 03:27:24,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:27:24,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:24,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:24,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:24,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:24,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:24,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:24,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:27:24,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:24,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:24,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:24,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:24,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:24,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:24,756 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-29 03:27:24,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795098988] [2020-10-29 03:27:24,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:27:24,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:27:24,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57046263] [2020-10-29 03:27:24,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:27:24,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:24,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:27:24,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:27:24,760 INFO L87 Difference]: Start difference. First operand 128 states and 147 transitions. Second operand 10 states. [2020-10-29 03:27:25,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:25,526 INFO L93 Difference]: Finished difference Result 203 states and 238 transitions. [2020-10-29 03:27:25,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:27:25,527 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-10-29 03:27:25,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:25,532 INFO L225 Difference]: With dead ends: 203 [2020-10-29 03:27:25,532 INFO L226 Difference]: Without dead ends: 149 [2020-10-29 03:27:25,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:27:25,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-29 03:27:25,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 138. [2020-10-29 03:27:25,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-29 03:27:25,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 156 transitions. [2020-10-29 03:27:25,575 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 156 transitions. Word has length 75 [2020-10-29 03:27:25,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:25,576 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 156 transitions. [2020-10-29 03:27:25,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:27:25,576 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 156 transitions. [2020-10-29 03:27:25,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 03:27:25,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:25,580 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:27:25,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:27:25,581 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:25,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:25,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1032505380, now seen corresponding path program 4 times [2020-10-29 03:27:25,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:25,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866545579] [2020-10-29 03:27:25,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:25,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:25,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:25,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:25,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:25,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:25,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:25,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:26,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:30,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:30,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 03:27:30,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:27:30,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:27:30,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:30,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:30,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:27:30,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 03:27:30,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:27:30,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:27:30,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:30,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:30,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:30,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:30,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:30,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:27:30,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:30,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:30,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:30,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:30,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:30,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:30,729 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-29 03:27:30,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866545579] [2020-10-29 03:27:30,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:27:30,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:27:30,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931171064] [2020-10-29 03:27:30,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:27:30,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:30,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:27:30,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:27:30,738 INFO L87 Difference]: Start difference. First operand 138 states and 156 transitions. Second operand 10 states. [2020-10-29 03:27:31,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:31,236 INFO L93 Difference]: Finished difference Result 231 states and 258 transitions. [2020-10-29 03:27:31,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:27:31,238 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-10-29 03:27:31,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:31,240 INFO L225 Difference]: With dead ends: 231 [2020-10-29 03:27:31,240 INFO L226 Difference]: Without dead ends: 105 [2020-10-29 03:27:31,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:27:31,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-29 03:27:31,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 95. [2020-10-29 03:27:31,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-29 03:27:31,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 105 transitions. [2020-10-29 03:27:31,268 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 105 transitions. Word has length 75 [2020-10-29 03:27:31,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:31,273 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 105 transitions. [2020-10-29 03:27:31,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:27:31,274 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 105 transitions. [2020-10-29 03:27:31,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-29 03:27:31,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:31,275 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:27:31,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:27:31,276 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:31,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:31,281 INFO L82 PathProgramCache]: Analyzing trace with hash -456001106, now seen corresponding path program 5 times [2020-10-29 03:27:31,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:31,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178557616] [2020-10-29 03:27:31,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:31,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:31,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:31,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:32,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:34,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:36,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:36,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 03:27:36,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:27:36,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-29 03:27:36,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:36,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:36,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 64 [2020-10-29 03:27:36,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:27:36,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 03:27:36,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:41,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:41,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:41,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:41,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:41,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:41,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:27:41,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:41,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:41,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:41,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:41,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:41,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:41,621 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:27:41,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178557616] [2020-10-29 03:27:41,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:27:41,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2020-10-29 03:27:41,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904988015] [2020-10-29 03:27:41,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-10-29 03:27:41,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:41,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-10-29 03:27:41,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=3884, Unknown=0, NotChecked=0, Total=4032 [2020-10-29 03:27:41,626 INFO L87 Difference]: Start difference. First operand 95 states and 105 transitions. Second operand 64 states. [2020-10-29 03:27:45,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:45,812 INFO L93 Difference]: Finished difference Result 179 states and 198 transitions. [2020-10-29 03:27:45,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-10-29 03:27:45,812 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 93 [2020-10-29 03:27:45,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:45,814 INFO L225 Difference]: With dead ends: 179 [2020-10-29 03:27:45,815 INFO L226 Difference]: Without dead ends: 173 [2020-10-29 03:27:45,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=168, Invalid=4388, Unknown=0, NotChecked=0, Total=4556 [2020-10-29 03:27:45,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-29 03:27:45,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 164. [2020-10-29 03:27:45,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-29 03:27:45,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 183 transitions. [2020-10-29 03:27:45,838 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 183 transitions. Word has length 93 [2020-10-29 03:27:45,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:45,838 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 183 transitions. [2020-10-29 03:27:45,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-10-29 03:27:45,838 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 183 transitions. [2020-10-29 03:27:45,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-29 03:27:45,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:45,844 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2020-10-29 03:27:45,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:27:45,847 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:45,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:45,848 INFO L82 PathProgramCache]: Analyzing trace with hash -2113994128, now seen corresponding path program 6 times [2020-10-29 03:27:45,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:45,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83547431] [2020-10-29 03:27:45,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:45,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:45,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:45,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:45,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:45,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:45,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:46,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:48,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:50,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:50,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 03:27:50,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:27:50,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:27:50,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:50,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:50,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:27:50,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 03:27:50,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:27:50,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:50,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:50,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:50,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:50,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:50,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:50,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:27:50,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:50,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:50,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:50,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:50,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:50,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:51,009 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-29 03:27:51,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83547431] [2020-10-29 03:27:51,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:27:51,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:27:51,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165547879] [2020-10-29 03:27:51,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:27:51,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:51,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:27:51,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:27:51,012 INFO L87 Difference]: Start difference. First operand 164 states and 183 transitions. Second operand 12 states. [2020-10-29 03:27:52,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:52,207 INFO L93 Difference]: Finished difference Result 257 states and 292 transitions. [2020-10-29 03:27:52,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:27:52,207 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 95 [2020-10-29 03:27:52,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:52,209 INFO L225 Difference]: With dead ends: 257 [2020-10-29 03:27:52,209 INFO L226 Difference]: Without dead ends: 187 [2020-10-29 03:27:52,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:27:52,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-29 03:27:52,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 172. [2020-10-29 03:27:52,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-29 03:27:52,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 190 transitions. [2020-10-29 03:27:52,243 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 190 transitions. Word has length 95 [2020-10-29 03:27:52,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:52,244 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 190 transitions. [2020-10-29 03:27:52,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:27:52,244 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 190 transitions. [2020-10-29 03:27:52,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-29 03:27:52,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:52,246 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2020-10-29 03:27:52,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:27:52,246 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:52,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:52,247 INFO L82 PathProgramCache]: Analyzing trace with hash 301939760, now seen corresponding path program 7 times [2020-10-29 03:27:52,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:52,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851046273] [2020-10-29 03:27:52,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:52,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:52,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:52,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:52,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:52,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:52,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:52,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:57,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:57,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 03:27:57,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:27:57,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:27:57,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:57,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:57,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:27:57,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 03:27:57,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 03:27:57,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:57,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:57,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:57,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:57,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:57,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:57,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:27:57,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:57,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:57,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:57,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:57,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:57,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:57,410 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-29 03:27:57,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851046273] [2020-10-29 03:27:57,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:27:57,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:27:57,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806601540] [2020-10-29 03:27:57,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:27:57,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:57,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:27:57,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:27:57,417 INFO L87 Difference]: Start difference. First operand 172 states and 190 transitions. Second operand 12 states. [2020-10-29 03:27:58,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:58,081 INFO L93 Difference]: Finished difference Result 285 states and 312 transitions. [2020-10-29 03:27:58,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:27:58,082 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 95 [2020-10-29 03:27:58,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:58,084 INFO L225 Difference]: With dead ends: 285 [2020-10-29 03:27:58,084 INFO L226 Difference]: Without dead ends: 125 [2020-10-29 03:27:58,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:27:58,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-29 03:27:58,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 115. [2020-10-29 03:27:58,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-29 03:27:58,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 125 transitions. [2020-10-29 03:27:58,102 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 125 transitions. Word has length 95 [2020-10-29 03:27:58,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:58,104 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 125 transitions. [2020-10-29 03:27:58,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:27:58,104 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 125 transitions. [2020-10-29 03:27:58,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-29 03:27:58,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:58,106 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:27:58,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:27:58,107 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:58,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:58,108 INFO L82 PathProgramCache]: Analyzing trace with hash 985293058, now seen corresponding path program 8 times [2020-10-29 03:27:58,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:58,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263782561] [2020-10-29 03:27:58,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:58,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:58,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:00,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:03,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:03,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 03:28:03,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:28:03,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:28:03,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:03,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:03,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 86 [2020-10-29 03:28:03,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:28:03,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 03:28:03,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:16,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:28:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:16,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:16,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:16,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:28:16,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:28:16,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:28:16,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:16,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:16,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:28:16,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:28:16,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:28:16,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:16,932 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:28:16,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263782561] [2020-10-29 03:28:16,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:28:16,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2020-10-29 03:28:16,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908597968] [2020-10-29 03:28:16,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 85 states [2020-10-29 03:28:16,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:28:16,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2020-10-29 03:28:16,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=6954, Unknown=0, NotChecked=0, Total=7140 [2020-10-29 03:28:16,937 INFO L87 Difference]: Start difference. First operand 115 states and 125 transitions. Second operand 85 states. [2020-10-29 03:28:21,131 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2020-10-29 03:28:21,805 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-10-29 03:28:23,608 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-29 03:28:25,833 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-29 03:28:26,354 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-10-29 03:28:28,476 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-10-29 03:28:32,093 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-10-29 03:28:33,970 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 83 [2020-10-29 03:28:34,771 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-10-29 03:28:37,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:28:37,675 INFO L93 Difference]: Finished difference Result 222 states and 241 transitions. [2020-10-29 03:28:37,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2020-10-29 03:28:37,677 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 113 [2020-10-29 03:28:37,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:28:37,679 INFO L225 Difference]: With dead ends: 222 [2020-10-29 03:28:37,680 INFO L226 Difference]: Without dead ends: 216 [2020-10-29 03:28:37,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2108 ImplicationChecksByTransitivity, 24.2s TimeCoverageRelationStatistics Valid=504, Invalid=17318, Unknown=0, NotChecked=0, Total=17822 [2020-10-29 03:28:37,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-29 03:28:37,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 200. [2020-10-29 03:28:37,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-29 03:28:37,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 219 transitions. [2020-10-29 03:28:37,704 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 219 transitions. Word has length 113 [2020-10-29 03:28:37,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:28:37,704 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 219 transitions. [2020-10-29 03:28:37,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 85 states. [2020-10-29 03:28:37,704 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 219 transitions. [2020-10-29 03:28:37,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-29 03:28:37,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:28:37,706 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1] [2020-10-29 03:28:37,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:28:37,706 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:28:37,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:28:37,707 INFO L82 PathProgramCache]: Analyzing trace with hash 258516164, now seen corresponding path program 9 times [2020-10-29 03:28:37,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:28:37,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950763412] [2020-10-29 03:28:37,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:28:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:37,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:37,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:37,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:37,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:37,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:37,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:42,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:42,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:42,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 03:28:42,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:28:42,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 03:28:42,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:42,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:42,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:28:42,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-29 03:28:42,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:28:42,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:42,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:28:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:42,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:42,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:42,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:28:42,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:28:42,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:28:42,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:42,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:42,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:28:42,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:28:42,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:28:42,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:42,949 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-29 03:28:42,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950763412] [2020-10-29 03:28:42,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:28:42,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:28:42,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814596140] [2020-10-29 03:28:42,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:28:42,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:28:42,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:28:42,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:28:42,952 INFO L87 Difference]: Start difference. First operand 200 states and 219 transitions. Second operand 14 states. [2020-10-29 03:28:44,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:28:44,476 INFO L93 Difference]: Finished difference Result 311 states and 346 transitions. [2020-10-29 03:28:44,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:28:44,479 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 115 [2020-10-29 03:28:44,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:28:44,481 INFO L225 Difference]: With dead ends: 311 [2020-10-29 03:28:44,481 INFO L226 Difference]: Without dead ends: 225 [2020-10-29 03:28:44,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:28:44,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-29 03:28:44,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 206. [2020-10-29 03:28:44,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-29 03:28:44,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 224 transitions. [2020-10-29 03:28:44,500 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 224 transitions. Word has length 115 [2020-10-29 03:28:44,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:28:44,500 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 224 transitions. [2020-10-29 03:28:44,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:28:44,501 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 224 transitions. [2020-10-29 03:28:44,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-29 03:28:44,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:28:44,502 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1] [2020-10-29 03:28:44,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:28:44,502 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:28:44,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:28:44,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1888805244, now seen corresponding path program 10 times [2020-10-29 03:28:44,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:28:44,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076591821] [2020-10-29 03:28:44,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:28:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:44,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:44,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:44,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:44,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:44,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:44,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:44,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:48,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:49,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:49,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 03:28:49,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:28:49,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:28:49,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:49,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:49,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:28:49,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 03:28:49,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 03:28:49,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:49,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:28:49,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:49,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:49,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:49,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:28:49,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:28:49,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:28:49,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:49,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:49,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:28:49,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:28:49,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:28:49,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:49,701 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-29 03:28:49,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076591821] [2020-10-29 03:28:49,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:28:49,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:28:49,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918284714] [2020-10-29 03:28:49,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:28:49,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:28:49,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:28:49,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:28:49,704 INFO L87 Difference]: Start difference. First operand 206 states and 224 transitions. Second operand 14 states. [2020-10-29 03:28:50,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:28:50,842 INFO L93 Difference]: Finished difference Result 339 states and 366 transitions. [2020-10-29 03:28:50,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:28:50,843 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 115 [2020-10-29 03:28:50,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:28:50,844 INFO L225 Difference]: With dead ends: 339 [2020-10-29 03:28:50,844 INFO L226 Difference]: Without dead ends: 145 [2020-10-29 03:28:50,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:28:50,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-29 03:28:50,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 135. [2020-10-29 03:28:50,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-29 03:28:50,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 145 transitions. [2020-10-29 03:28:50,863 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 145 transitions. Word has length 115 [2020-10-29 03:28:50,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:28:50,863 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 145 transitions. [2020-10-29 03:28:50,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:28:50,864 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 145 transitions. [2020-10-29 03:28:50,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-29 03:28:50,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:28:50,865 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:28:50,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:28:50,866 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:28:50,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:28:50,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1910167978, now seen corresponding path program 11 times [2020-10-29 03:28:50,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:28:50,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297092879] [2020-10-29 03:28:50,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:28:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:50,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:51,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:54,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:58,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:58,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-29 03:28:58,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:28:58,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7615 [2020-10-29 03:28:58,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:58,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:58,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 108 [2020-10-29 03:28:58,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:28:58,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 03:28:58,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:00,860 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2020-10-29 03:29:01,048 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2020-10-29 03:29:01,247 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 45 [2020-10-29 03:29:01,479 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 46 [2020-10-29 03:29:01,872 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-10-29 03:29:02,082 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2020-10-29 03:29:02,312 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2020-10-29 03:29:02,550 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2020-10-29 03:29:02,796 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-10-29 03:29:03,056 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2020-10-29 03:29:03,319 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2020-10-29 03:29:03,631 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2020-10-29 03:29:03,924 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2020-10-29 03:29:04,215 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 53 [2020-10-29 03:29:04,551 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 44 [2020-10-29 03:29:04,843 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 46 [2020-10-29 03:29:05,160 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2020-10-29 03:29:05,460 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2020-10-29 03:29:05,754 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2020-10-29 03:29:06,048 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 49 [2020-10-29 03:29:06,366 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 53 [2020-10-29 03:29:06,649 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48 [2020-10-29 03:29:06,971 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2020-10-29 03:29:07,261 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2020-10-29 03:29:07,541 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 47 [2020-10-29 03:29:07,841 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 47 [2020-10-29 03:29:08,192 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2020-10-29 03:29:08,510 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 51 [2020-10-29 03:29:08,816 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 46 [2020-10-29 03:29:09,119 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 45 [2020-10-29 03:29:09,467 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 47 [2020-10-29 03:29:09,794 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 49 [2020-10-29 03:29:10,131 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2020-10-29 03:29:10,487 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2020-10-29 03:29:10,787 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2020-10-29 03:29:11,196 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2020-10-29 03:29:11,605 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 48 [2020-10-29 03:29:11,994 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2020-10-29 03:29:12,375 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 47 [2020-10-29 03:29:12,769 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-29 03:29:13,128 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2020-10-29 03:29:13,525 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 45 [2020-10-29 03:29:13,918 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 49 [2020-10-29 03:29:14,284 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2020-10-29 03:29:25,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:29:25,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:29:25,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:25,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:29:25,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:29:25,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:29:25,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:29:25,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:29:25,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:29:25,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:29:25,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:29:25,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:29:25,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:25,569 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 9 proven. 241 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:29:25,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297092879] [2020-10-29 03:29:25,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:29:25,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2020-10-29 03:29:25,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217803306] [2020-10-29 03:29:25,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 109 states [2020-10-29 03:29:25,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:29:25,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2020-10-29 03:29:25,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=714, Invalid=11058, Unknown=0, NotChecked=0, Total=11772 [2020-10-29 03:29:25,574 INFO L87 Difference]: Start difference. First operand 135 states and 145 transitions. Second operand 109 states. [2020-10-29 03:29:25,990 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 3 [2020-10-29 03:29:26,508 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 36 [2020-10-29 03:29:28,790 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 86 [2020-10-29 03:29:30,470 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 189 DAG size of output: 142 [2020-10-29 03:29:32,281 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 189 DAG size of output: 142 [2020-10-29 03:29:33,614 WARN L193 SmtUtils]: Spent 803.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 133 [2020-10-29 03:29:34,132 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-29 03:29:35,063 WARN L193 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 112 [2020-10-29 03:29:36,056 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 118 [2020-10-29 03:29:36,455 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 61 [2020-10-29 03:29:37,229 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 97 [2020-10-29 03:29:38,081 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 96 [2020-10-29 03:29:38,740 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2020-10-29 03:29:39,416 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 66 [2020-10-29 03:29:39,919 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2020-10-29 03:29:41,282 WARN L193 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 85 [2020-10-29 03:29:41,811 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2020-10-29 03:29:42,500 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2020-10-29 03:29:44,493 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 189 DAG size of output: 137 [2020-10-29 03:29:46,103 WARN L193 SmtUtils]: Spent 987.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 130 [2020-10-29 03:29:47,466 WARN L193 SmtUtils]: Spent 792.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 112 [2020-10-29 03:29:48,781 WARN L193 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 120 [2020-10-29 03:29:49,811 WARN L193 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 100 [2020-10-29 03:29:50,965 WARN L193 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 103 [2020-10-29 03:29:51,892 WARN L193 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 75 [2020-10-29 03:29:52,620 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 76 [2020-10-29 03:29:53,192 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2020-10-29 03:29:54,175 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 82 [2020-10-29 03:29:57,976 WARN L193 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 90 [2020-10-29 03:29:59,002 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 76 [2020-10-29 03:30:00,694 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 47 [2020-10-29 03:30:01,327 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 38 [2020-10-29 03:30:02,579 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 55 [2020-10-29 03:30:03,513 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2020-10-29 03:30:04,538 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 63 [2020-10-29 03:30:05,466 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 51 [2020-10-29 03:30:06,400 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63 [2020-10-29 03:30:07,392 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 46 [2020-10-29 03:30:08,119 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2020-10-29 03:30:08,904 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 54 [2020-10-29 03:30:09,821 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63 [2020-10-29 03:30:10,626 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 53 [2020-10-29 03:30:11,306 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2020-10-29 03:30:12,253 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 39 [2020-10-29 03:30:13,164 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2020-10-29 03:30:14,018 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 51 [2020-10-29 03:30:18,525 WARN L193 SmtUtils]: Spent 3.94 s on a formula simplification. DAG size of input: 170 DAG size of output: 144 [2020-10-29 03:30:19,621 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 51 [2020-10-29 03:30:24,592 WARN L193 SmtUtils]: Spent 4.18 s on a formula simplification. DAG size of input: 170 DAG size of output: 137 [2020-10-29 03:30:25,576 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 45 [2020-10-29 03:30:27,632 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 128 DAG size of output: 124 [2020-10-29 03:30:28,648 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 60 [2020-10-29 03:30:30,059 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 85 [2020-10-29 03:30:32,324 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 145 DAG size of output: 109 [2020-10-29 03:30:34,196 WARN L193 SmtUtils]: Spent 967.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 80 [2020-10-29 03:30:36,100 WARN L193 SmtUtils]: Spent 869.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 111 [2020-10-29 03:30:40,750 WARN L193 SmtUtils]: Spent 864.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 91 [2020-10-29 03:30:41,705 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 90 [2020-10-29 03:30:44,363 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 191 DAG size of output: 139 [2020-10-29 03:30:45,273 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 70 [2020-10-29 03:30:46,527 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 88 [2020-10-29 03:30:49,072 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 191 DAG size of output: 139