/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 19:09:39,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 19:09:39,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 19:09:39,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 19:09:39,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 19:09:39,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 19:09:39,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 19:09:39,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 19:09:39,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 19:09:39,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 19:09:39,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 19:09:39,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 19:09:39,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 19:09:39,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 19:09:39,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 19:09:39,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 19:09:39,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 19:09:39,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 19:09:39,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 19:09:39,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 19:09:39,360 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 19:09:39,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 19:09:39,363 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 19:09:39,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 19:09:39,370 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 19:09:39,370 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 19:09:39,371 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 19:09:39,373 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 19:09:39,374 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 19:09:39,375 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 19:09:39,376 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 19:09:39,377 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 19:09:39,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 19:09:39,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 19:09:39,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 19:09:39,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 19:09:39,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 19:09:39,383 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 19:09:39,383 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 19:09:39,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 19:09:39,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 19:09:39,386 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 19:09:39,447 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 19:09:39,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 19:09:39,452 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 19:09:39,453 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 19:09:39,453 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 19:09:39,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 19:09:39,454 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 19:09:39,454 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 19:09:39,454 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 19:09:39,454 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 19:09:39,455 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 19:09:39,456 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 19:09:39,456 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 19:09:39,456 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 19:09:39,456 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 19:09:39,456 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 19:09:39,457 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 19:09:39,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 19:09:39,457 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 19:09:39,457 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 19:09:39,458 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 19:09:39,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 19:09:39,458 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 19:09:39,458 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 19:09:39,458 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 19:09:39,459 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 19:09:39,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 19:09:39,459 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 19:09:39,459 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 19:09:39,459 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 19:09:39,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 19:09:39,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 19:09:39,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 19:09:39,919 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 19:09:39,919 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 19:09:39,922 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 19:09:40,009 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22ff7a77a/69ff0792d8e8450a842da676316a1340/FLAGb886c30c1 [2020-10-28 19:09:40,729 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 19:09:40,729 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 19:09:40,744 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22ff7a77a/69ff0792d8e8450a842da676316a1340/FLAGb886c30c1 [2020-10-28 19:09:41,035 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22ff7a77a/69ff0792d8e8450a842da676316a1340 [2020-10-28 19:09:41,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 19:09:41,046 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 19:09:41,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 19:09:41,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 19:09:41,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 19:09:41,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:09:41" (1/1) ... [2020-10-28 19:09:41,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64cfa140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:09:41, skipping insertion in model container [2020-10-28 19:09:41,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:09:41" (1/1) ... [2020-10-28 19:09:41,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 19:09:41,133 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 19:09:41,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:09:41,610 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 19:09:41,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:09:41,802 INFO L208 MainTranslator]: Completed translation [2020-10-28 19:09:41,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:09:41 WrapperNode [2020-10-28 19:09:41,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 19:09:41,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 19:09:41,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 19:09:41,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 19:09:41,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:09:41" (1/1) ... [2020-10-28 19:09:41,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:09:41" (1/1) ... [2020-10-28 19:09:41,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:09:41" (1/1) ... [2020-10-28 19:09:41,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:09:41" (1/1) ... [2020-10-28 19:09:41,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:09:41" (1/1) ... [2020-10-28 19:09:41,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:09:41" (1/1) ... [2020-10-28 19:09:41,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:09:41" (1/1) ... [2020-10-28 19:09:41,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 19:09:41,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 19:09:41,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 19:09:41,966 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 19:09:41,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:09:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 19:09:42,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 19:09:42,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 19:09:42,048 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 19:09:42,049 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 19:09:42,049 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 19:09:42,049 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 19:09:42,049 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 19:09:42,049 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 19:09:42,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 19:09:42,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 19:09:42,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 19:09:42,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 19:09:42,050 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 19:09:42,051 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 19:09:42,051 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 19:09:42,051 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 19:09:42,051 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 19:09:42,051 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 19:09:42,051 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 19:09:42,052 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 19:09:42,052 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 19:09:42,052 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-28 19:09:42,052 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 19:09:42,052 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 19:09:42,052 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 19:09:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 19:09:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 19:09:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 19:09:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 19:09:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 19:09:42,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 19:09:43,304 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 19:09:43,304 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 19:09:43,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:09:43 BoogieIcfgContainer [2020-10-28 19:09:43,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 19:09:43,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 19:09:43,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 19:09:43,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 19:09:43,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 07:09:41" (1/3) ... [2020-10-28 19:09:43,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41fcfb37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:09:43, skipping insertion in model container [2020-10-28 19:09:43,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:09:41" (2/3) ... [2020-10-28 19:09:43,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41fcfb37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:09:43, skipping insertion in model container [2020-10-28 19:09:43,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:09:43" (3/3) ... [2020-10-28 19:09:43,317 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 19:09:43,330 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 19:09:43,336 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 19:09:43,350 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 19:09:43,382 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 19:09:43,383 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 19:09:43,383 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 19:09:43,383 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 19:09:43,383 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 19:09:43,384 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 19:09:43,384 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 19:09:43,384 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 19:09:43,410 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-28 19:09:43,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-28 19:09:43,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:09:43,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:09:43,425 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:09:43,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:09:43,433 INFO L82 PathProgramCache]: Analyzing trace with hash -819651216, now seen corresponding path program 1 times [2020-10-28 19:09:43,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:09:43,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915204054] [2020-10-28 19:09:43,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:09:43,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:09:44,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:44,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:44,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:48,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:09:48,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 19:09:48,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 19:09:48,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-28 19:09:48,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:09:48,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:09:48,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:09:48,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-28 19:09:48,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 19:09:48,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 19:09:49,469 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 19:09:49,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:09:49,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:09:49,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:49,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:09:49,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:09:49,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:09:49,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 19:09:49,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:09:49,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:09:49,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:09:49,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:09:49,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:09:49,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:09:49,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:09:49,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915204054] [2020-10-28 19:09:49,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:09:49,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:09:49,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978338259] [2020-10-28 19:09:49,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:09:49,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:09:49,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:09:49,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:09:49,608 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 4 states. [2020-10-28 19:09:49,991 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 19:09:51,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:09:51,671 INFO L93 Difference]: Finished difference Result 515 states and 846 transitions. [2020-10-28 19:09:51,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:09:51,673 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-10-28 19:09:51,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:09:51,690 INFO L225 Difference]: With dead ends: 515 [2020-10-28 19:09:51,690 INFO L226 Difference]: Without dead ends: 387 [2020-10-28 19:09:51,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:09:51,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-10-28 19:09:51,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 384. [2020-10-28 19:09:51,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2020-10-28 19:09:51,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 574 transitions. [2020-10-28 19:09:51,781 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 574 transitions. Word has length 100 [2020-10-28 19:09:51,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:09:51,782 INFO L481 AbstractCegarLoop]: Abstraction has 384 states and 574 transitions. [2020-10-28 19:09:51,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:09:51,783 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 574 transitions. [2020-10-28 19:09:51,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 19:09:51,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:09:51,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:09:51,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 19:09:51,789 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:09:51,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:09:51,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1129419341, now seen corresponding path program 1 times [2020-10-28 19:09:51,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:09:51,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689938921] [2020-10-28 19:09:51,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:09:51,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:09:51,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:52,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:53,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:09:53,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 19:09:53,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 19:09:53,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1978 [2020-10-28 19:09:53,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:09:53,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:09:53,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:09:53,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-28 19:09:53,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 19:09:53,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:09:54,389 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 19:09:54,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:09:54,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:09:54,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:54,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:09:54,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:09:54,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:09:54,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 19:09:54,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:09:54,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:09:54,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:09:54,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:09:54,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:09:54,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:09:54,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:09:54,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689938921] [2020-10-28 19:09:54,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:09:54,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:09:54,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473550768] [2020-10-28 19:09:54,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:09:54,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:09:54,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:09:54,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:09:54,465 INFO L87 Difference]: Start difference. First operand 384 states and 574 transitions. Second operand 5 states. [2020-10-28 19:09:55,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:09:55,855 INFO L93 Difference]: Finished difference Result 593 states and 905 transitions. [2020-10-28 19:09:55,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:09:55,856 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-28 19:09:55,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:09:55,862 INFO L225 Difference]: With dead ends: 593 [2020-10-28 19:09:55,862 INFO L226 Difference]: Without dead ends: 590 [2020-10-28 19:09:55,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:09:55,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2020-10-28 19:09:55,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 386. [2020-10-28 19:09:55,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-10-28 19:09:55,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 576 transitions. [2020-10-28 19:09:55,935 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 576 transitions. Word has length 101 [2020-10-28 19:09:55,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:09:55,936 INFO L481 AbstractCegarLoop]: Abstraction has 386 states and 576 transitions. [2020-10-28 19:09:55,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:09:55,936 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 576 transitions. [2020-10-28 19:09:55,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-28 19:09:55,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:09:55,942 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:09:55,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 19:09:55,946 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:09:55,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:09:55,950 INFO L82 PathProgramCache]: Analyzing trace with hash 866926773, now seen corresponding path program 1 times [2020-10-28 19:09:55,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:09:55,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208822458] [2020-10-28 19:09:55,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:09:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:09:56,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:56,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:57,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:09:57,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 19:09:57,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 19:09:57,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1472 [2020-10-28 19:09:57,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:09:57,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:09:57,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:09:57,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 19:09:57,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 19:09:57,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:09:57,997 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 19:09:57,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:09:58,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:09:58,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:58,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:09:58,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:09:58,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:09:58,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 19:09:58,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:09:58,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:09:58,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:09:58,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:09:58,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:09:58,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:09:58,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:09:58,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208822458] [2020-10-28 19:09:58,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:09:58,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:09:58,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461445370] [2020-10-28 19:09:58,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:09:58,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:09:58,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:09:58,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:09:58,095 INFO L87 Difference]: Start difference. First operand 386 states and 576 transitions. Second operand 5 states. [2020-10-28 19:09:58,545 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 19:09:59,746 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-28 19:10:00,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:10:00,313 INFO L93 Difference]: Finished difference Result 819 states and 1263 transitions. [2020-10-28 19:10:00,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 19:10:00,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-28 19:10:00,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:10:00,321 INFO L225 Difference]: With dead ends: 819 [2020-10-28 19:10:00,321 INFO L226 Difference]: Without dead ends: 596 [2020-10-28 19:10:00,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 19:10:00,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2020-10-28 19:10:00,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 591. [2020-10-28 19:10:00,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-10-28 19:10:00,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 901 transitions. [2020-10-28 19:10:00,377 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 901 transitions. Word has length 102 [2020-10-28 19:10:00,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:10:00,378 INFO L481 AbstractCegarLoop]: Abstraction has 591 states and 901 transitions. [2020-10-28 19:10:00,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:10:00,379 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 901 transitions. [2020-10-28 19:10:00,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-28 19:10:00,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:10:00,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:10:00,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 19:10:00,389 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:10:00,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:10:00,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1940809140, now seen corresponding path program 1 times [2020-10-28 19:10:00,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:10:00,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581712550] [2020-10-28 19:10:00,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:10:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:10:00,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:00,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:00,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:01,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:03,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:05,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:10:05,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 19:10:05,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:10:05,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-28 19:10:05,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:10:05,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:10:05,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:10:05,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-28 19:10:05,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 19:10:05,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 19:10:05,883 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 19:10:05,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:10:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:10:05,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:05,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:10:05,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:10:05,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:10:05,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 19:10:05,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:10:05,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:10:05,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:10:05,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:10:05,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:10:05,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:10:05,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:10:05,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581712550] [2020-10-28 19:10:05,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:10:05,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:10:05,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404833978] [2020-10-28 19:10:05,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:10:05,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:10:05,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:10:05,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:10:05,940 INFO L87 Difference]: Start difference. First operand 591 states and 901 transitions. Second operand 4 states. [2020-10-28 19:10:06,283 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-28 19:10:07,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:10:07,601 INFO L93 Difference]: Finished difference Result 1519 states and 2369 transitions. [2020-10-28 19:10:07,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:10:07,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-28 19:10:07,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:10:07,609 INFO L225 Difference]: With dead ends: 1519 [2020-10-28 19:10:07,609 INFO L226 Difference]: Without dead ends: 1061 [2020-10-28 19:10:07,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:10:07,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2020-10-28 19:10:07,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 1058. [2020-10-28 19:10:07,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1058 states. [2020-10-28 19:10:07,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1627 transitions. [2020-10-28 19:10:07,699 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1627 transitions. Word has length 103 [2020-10-28 19:10:07,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:10:07,700 INFO L481 AbstractCegarLoop]: Abstraction has 1058 states and 1627 transitions. [2020-10-28 19:10:07,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:10:07,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1627 transitions. [2020-10-28 19:10:07,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-28 19:10:07,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:10:07,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:10:07,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 19:10:07,702 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:10:07,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:10:07,703 INFO L82 PathProgramCache]: Analyzing trace with hash -2115157046, now seen corresponding path program 1 times [2020-10-28 19:10:07,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:10:07,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526331640] [2020-10-28 19:10:07,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:10:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:10:07,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:07,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:08,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:08,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:09,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:12,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:10:12,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 19:10:12,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:10:12,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 19:10:12,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:10:12,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:10:12,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:10:12,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-28 19:10:12,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 19:10:12,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:10:13,219 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 19:10:13,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:10:13,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:10:13,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:13,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:10:13,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:10:13,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:10:13,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 19:10:13,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:10:13,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:10:13,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:10:13,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:10:13,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:10:13,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:10:13,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:10:13,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526331640] [2020-10-28 19:10:13,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:10:13,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:10:13,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805515620] [2020-10-28 19:10:13,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:10:13,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:10:13,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:10:13,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:10:13,291 INFO L87 Difference]: Start difference. First operand 1058 states and 1627 transitions. Second operand 4 states. [2020-10-28 19:10:13,667 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-28 19:10:15,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:10:15,039 INFO L93 Difference]: Finished difference Result 2772 states and 4321 transitions. [2020-10-28 19:10:15,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:10:15,040 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-28 19:10:15,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:10:15,052 INFO L225 Difference]: With dead ends: 2772 [2020-10-28 19:10:15,052 INFO L226 Difference]: Without dead ends: 1927 [2020-10-28 19:10:15,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:10:15,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2020-10-28 19:10:15,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1924. [2020-10-28 19:10:15,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1924 states. [2020-10-28 19:10:15,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 2961 transitions. [2020-10-28 19:10:15,190 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 2961 transitions. Word has length 103 [2020-10-28 19:10:15,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:10:15,190 INFO L481 AbstractCegarLoop]: Abstraction has 1924 states and 2961 transitions. [2020-10-28 19:10:15,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:10:15,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 2961 transitions. [2020-10-28 19:10:15,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-28 19:10:15,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:10:15,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:10:15,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 19:10:15,194 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:10:15,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:10:15,195 INFO L82 PathProgramCache]: Analyzing trace with hash -756776773, now seen corresponding path program 1 times [2020-10-28 19:10:15,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:10:15,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682011129] [2020-10-28 19:10:15,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:10:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:10:15,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:15,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:15,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:16,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:16,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:20,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:10:20,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 19:10:20,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:10:20,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 19:10:20,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:10:20,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:10:20,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:10:20,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-28 19:10:20,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 19:10:20,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:10:20,665 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 19:10:20,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:10:20,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:10:20,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:20,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:10:20,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:10:20,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:10:20,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 19:10:20,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:10:20,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:10:20,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:10:20,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:10:20,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:10:20,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:10:20,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:10:20,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682011129] [2020-10-28 19:10:20,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:10:20,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:10:20,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533912300] [2020-10-28 19:10:20,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:10:20,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:10:20,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:10:20,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:10:20,736 INFO L87 Difference]: Start difference. First operand 1924 states and 2961 transitions. Second operand 4 states. [2020-10-28 19:10:21,147 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-28 19:10:22,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:10:22,483 INFO L93 Difference]: Finished difference Result 5026 states and 7805 transitions. [2020-10-28 19:10:22,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:10:22,484 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-28 19:10:22,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:10:22,503 INFO L225 Difference]: With dead ends: 5026 [2020-10-28 19:10:22,503 INFO L226 Difference]: Without dead ends: 3499 [2020-10-28 19:10:22,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:10:22,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3499 states. [2020-10-28 19:10:22,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3499 to 3496. [2020-10-28 19:10:22,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3496 states. [2020-10-28 19:10:22,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3496 states to 3496 states and 5377 transitions. [2020-10-28 19:10:22,704 INFO L78 Accepts]: Start accepts. Automaton has 3496 states and 5377 transitions. Word has length 103 [2020-10-28 19:10:22,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:10:22,705 INFO L481 AbstractCegarLoop]: Abstraction has 3496 states and 5377 transitions. [2020-10-28 19:10:22,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:10:22,705 INFO L276 IsEmpty]: Start isEmpty. Operand 3496 states and 5377 transitions. [2020-10-28 19:10:22,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-28 19:10:22,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:10:22,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:10:22,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 19:10:22,709 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:10:22,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:10:22,709 INFO L82 PathProgramCache]: Analyzing trace with hash -781062644, now seen corresponding path program 1 times [2020-10-28 19:10:22,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:10:22,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390620590] [2020-10-28 19:10:22,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:10:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:10:22,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:22,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:22,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:23,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:24,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:27,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:10:27,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 19:10:27,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:10:27,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 19:10:27,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:10:27,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:10:27,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:10:27,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-28 19:10:27,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 19:10:27,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:10:28,141 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 19:10:28,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:10:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:10:28,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:28,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:10:28,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:10:28,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:10:28,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 19:10:28,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:10:28,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:10:28,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:10:28,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:10:28,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:10:28,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:10:28,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:10:28,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390620590] [2020-10-28 19:10:28,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:10:28,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:10:28,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317061289] [2020-10-28 19:10:28,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:10:28,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:10:28,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:10:28,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:10:28,210 INFO L87 Difference]: Start difference. First operand 3496 states and 5377 transitions. Second operand 4 states. [2020-10-28 19:10:28,601 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-28 19:10:30,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:10:30,044 INFO L93 Difference]: Finished difference Result 9398 states and 14493 transitions. [2020-10-28 19:10:30,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:10:30,045 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-28 19:10:30,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:10:30,081 INFO L225 Difference]: With dead ends: 9398 [2020-10-28 19:10:30,081 INFO L226 Difference]: Without dead ends: 6475 [2020-10-28 19:10:30,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:10:30,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6475 states. [2020-10-28 19:10:30,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6475 to 6472. [2020-10-28 19:10:30,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6472 states. [2020-10-28 19:10:30,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6472 states to 6472 states and 9865 transitions. [2020-10-28 19:10:30,527 INFO L78 Accepts]: Start accepts. Automaton has 6472 states and 9865 transitions. Word has length 103 [2020-10-28 19:10:30,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:10:30,528 INFO L481 AbstractCegarLoop]: Abstraction has 6472 states and 9865 transitions. [2020-10-28 19:10:30,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:10:30,528 INFO L276 IsEmpty]: Start isEmpty. Operand 6472 states and 9865 transitions. [2020-10-28 19:10:30,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-28 19:10:30,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:10:30,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:10:30,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 19:10:30,533 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:10:30,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:10:30,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1416105866, now seen corresponding path program 1 times [2020-10-28 19:10:30,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:10:30,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115581714] [2020-10-28 19:10:30,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:10:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:10:30,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:30,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:30,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:30,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:32,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:35,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:10:35,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 19:10:35,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:10:35,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 19:10:35,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:10:35,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:10:35,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:10:35,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-28 19:10:35,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 19:10:35,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:10:35,957 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 19:10:35,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:10:35,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:10:35,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:35,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:10:35,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:10:35,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:10:35,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 19:10:35,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:10:35,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:10:35,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:10:35,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:10:35,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:10:35,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:10:35,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:10:35,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115581714] [2020-10-28 19:10:35,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:10:35,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:10:35,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000207926] [2020-10-28 19:10:35,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:10:35,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:10:35,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:10:35,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:10:35,999 INFO L87 Difference]: Start difference. First operand 6472 states and 9865 transitions. Second operand 4 states. [2020-10-28 19:10:36,400 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-28 19:10:38,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:10:38,098 INFO L93 Difference]: Finished difference Result 18084 states and 27551 transitions. [2020-10-28 19:10:38,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:10:38,098 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-28 19:10:38,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:10:38,161 INFO L225 Difference]: With dead ends: 18084 [2020-10-28 19:10:38,162 INFO L226 Difference]: Without dead ends: 12113 [2020-10-28 19:10:38,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:10:38,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12113 states. [2020-10-28 19:10:38,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12113 to 12110. [2020-10-28 19:10:38,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12110 states. [2020-10-28 19:10:38,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12110 states to 12110 states and 18219 transitions. [2020-10-28 19:10:38,813 INFO L78 Accepts]: Start accepts. Automaton has 12110 states and 18219 transitions. Word has length 103 [2020-10-28 19:10:38,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:10:38,813 INFO L481 AbstractCegarLoop]: Abstraction has 12110 states and 18219 transitions. [2020-10-28 19:10:38,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:10:38,813 INFO L276 IsEmpty]: Start isEmpty. Operand 12110 states and 18219 transitions. [2020-10-28 19:10:38,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-28 19:10:38,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:10:38,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:10:38,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 19:10:38,822 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:10:38,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:10:38,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1260213900, now seen corresponding path program 1 times [2020-10-28 19:10:38,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:10:38,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278246212] [2020-10-28 19:10:38,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:10:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:10:38,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:38,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:38,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:39,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:39,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:43,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:10:43,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 19:10:43,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:10:43,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 19:10:43,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:10:43,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:10:43,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:10:43,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 19:10:43,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 19:10:43,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:10:44,229 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 19:10:44,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:10:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:10:44,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:44,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:10:44,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:10:44,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:10:44,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 19:10:44,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:10:44,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:10:44,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:10:44,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:10:44,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:10:44,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:10:44,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:10:44,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278246212] [2020-10-28 19:10:44,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:10:44,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:10:44,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922205229] [2020-10-28 19:10:44,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:10:44,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:10:44,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:10:44,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:10:44,272 INFO L87 Difference]: Start difference. First operand 12110 states and 18219 transitions. Second operand 4 states. [2020-10-28 19:10:44,667 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-28 19:10:46,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:10:46,581 INFO L93 Difference]: Finished difference Result 34652 states and 52189 transitions. [2020-10-28 19:10:46,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:10:46,582 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-28 19:10:46,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:10:46,642 INFO L225 Difference]: With dead ends: 34652 [2020-10-28 19:10:46,643 INFO L226 Difference]: Without dead ends: 23161 [2020-10-28 19:10:46,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:10:46,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23161 states. [2020-10-28 19:10:47,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23161 to 23158. [2020-10-28 19:10:47,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23158 states. [2020-10-28 19:10:48,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23158 states to 23158 states and 34553 transitions. [2020-10-28 19:10:48,045 INFO L78 Accepts]: Start accepts. Automaton has 23158 states and 34553 transitions. Word has length 103 [2020-10-28 19:10:48,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:10:48,045 INFO L481 AbstractCegarLoop]: Abstraction has 23158 states and 34553 transitions. [2020-10-28 19:10:48,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:10:48,045 INFO L276 IsEmpty]: Start isEmpty. Operand 23158 states and 34553 transitions. [2020-10-28 19:10:48,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 19:10:48,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:10:48,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:10:48,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 19:10:48,063 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:10:48,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:10:48,064 INFO L82 PathProgramCache]: Analyzing trace with hash -639803550, now seen corresponding path program 1 times [2020-10-28 19:10:48,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:10:48,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645174225] [2020-10-28 19:10:48,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:10:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:10:48,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:48,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:48,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:48,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:49,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:51,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:10:51,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 19:10:51,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:10:51,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3524 [2020-10-28 19:10:51,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:10:51,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:10:51,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 19:10:51,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 19:10:51,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 19:10:51,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:10:52,186 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 19:10:52,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:10:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:10:52,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:52,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:10:52,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:10:52,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:10:52,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 19:10:52,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:10:52,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:10:52,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:10:52,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:10:52,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 19:10:52,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:10:52,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:10:52,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645174225] [2020-10-28 19:10:52,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:10:52,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 19:10:52,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454285874] [2020-10-28 19:10:52,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 19:10:52,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:10:52,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 19:10:52,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 19:10:52,283 INFO L87 Difference]: Start difference. First operand 23158 states and 34553 transitions. Second operand 8 states. [2020-10-28 19:10:52,702 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-28 19:10:54,445 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 19:10:57,186 WARN L193 SmtUtils]: Spent 516.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 19:10:59,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:10:59,268 INFO L93 Difference]: Finished difference Result 117236 states and 175955 transitions. [2020-10-28 19:10:59,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 19:10:59,269 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 104 [2020-10-28 19:10:59,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:10:59,553 INFO L225 Difference]: With dead ends: 117236 [2020-10-28 19:10:59,554 INFO L226 Difference]: Without dead ends: 96767 [2020-10-28 19:10:59,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-28 19:10:59,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96767 states. [2020-10-28 19:11:01,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96767 to 23254. [2020-10-28 19:11:01,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23254 states. [2020-10-28 19:11:01,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23254 states to 23254 states and 34521 transitions. [2020-10-28 19:11:01,855 INFO L78 Accepts]: Start accepts. Automaton has 23254 states and 34521 transitions. Word has length 104 [2020-10-28 19:11:01,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:11:01,855 INFO L481 AbstractCegarLoop]: Abstraction has 23254 states and 34521 transitions. [2020-10-28 19:11:01,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 19:11:01,856 INFO L276 IsEmpty]: Start isEmpty. Operand 23254 states and 34521 transitions. [2020-10-28 19:11:01,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 19:11:01,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:11:01,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:11:01,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 19:11:01,872 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:11:01,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:11:01,873 INFO L82 PathProgramCache]: Analyzing trace with hash -421681833, now seen corresponding path program 1 times [2020-10-28 19:11:01,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:11:01,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589382976] [2020-10-28 19:11:01,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:11:01,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:01,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:01,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:02,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:02,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:02,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:05,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:05,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 19:11:05,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:11:05,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3390 [2020-10-28 19:11:05,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:05,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:05,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 19:11:05,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 19:11:05,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-28 19:11:05,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:11:05,883 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 19:11:05,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:11:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:05,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:05,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:05,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:11:05,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:11:05,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 19:11:05,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:05,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:05,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:11:05,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:11:05,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 19:11:05,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:11:05,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:11:05,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589382976] [2020-10-28 19:11:05,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:11:05,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 19:11:05,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281570762] [2020-10-28 19:11:05,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 19:11:05,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:11:05,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 19:11:05,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 19:11:05,972 INFO L87 Difference]: Start difference. First operand 23254 states and 34521 transitions. Second operand 8 states. [2020-10-28 19:11:06,396 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-28 19:11:08,282 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 19:11:11,936 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 19:11:15,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:11:15,115 INFO L93 Difference]: Finished difference Result 126204 states and 187779 transitions. [2020-10-28 19:11:15,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 19:11:15,115 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 104 [2020-10-28 19:11:15,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:11:15,357 INFO L225 Difference]: With dead ends: 126204 [2020-10-28 19:11:15,357 INFO L226 Difference]: Without dead ends: 106499 [2020-10-28 19:11:15,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-28 19:11:15,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106499 states. [2020-10-28 19:11:17,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106499 to 24770. [2020-10-28 19:11:17,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24770 states. [2020-10-28 19:11:17,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24770 states to 24770 states and 36277 transitions. [2020-10-28 19:11:17,903 INFO L78 Accepts]: Start accepts. Automaton has 24770 states and 36277 transitions. Word has length 104 [2020-10-28 19:11:17,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:11:17,903 INFO L481 AbstractCegarLoop]: Abstraction has 24770 states and 36277 transitions. [2020-10-28 19:11:17,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 19:11:17,903 INFO L276 IsEmpty]: Start isEmpty. Operand 24770 states and 36277 transitions. [2020-10-28 19:11:17,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 19:11:17,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:11:17,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:11:17,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 19:11:17,924 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:11:17,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:11:17,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1240893399, now seen corresponding path program 1 times [2020-10-28 19:11:17,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:11:17,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176349663] [2020-10-28 19:11:17,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:11:17,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:17,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:18,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:18,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:18,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:18,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:21,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:21,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 19:11:21,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:11:21,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3065 [2020-10-28 19:11:21,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:21,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:21,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 19:11:21,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 19:11:21,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 19:11:21,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:11:21,566 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 19:11:21,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:11:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:21,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:21,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:21,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:11:21,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:11:21,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 19:11:21,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:21,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:21,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:11:21,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:11:21,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 19:11:21,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:11:21,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:11:21,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176349663] [2020-10-28 19:11:21,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:11:21,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 19:11:21,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772635758] [2020-10-28 19:11:21,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 19:11:21,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:11:21,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 19:11:21,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 19:11:21,634 INFO L87 Difference]: Start difference. First operand 24770 states and 36277 transitions. Second operand 8 states. [2020-10-28 19:11:22,036 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-28 19:11:24,003 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 19:11:27,828 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 19:11:31,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:11:31,064 INFO L93 Difference]: Finished difference Result 106226 states and 155699 transitions. [2020-10-28 19:11:31,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 19:11:31,065 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 104 [2020-10-28 19:11:31,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:11:31,199 INFO L225 Difference]: With dead ends: 106226 [2020-10-28 19:11:31,200 INFO L226 Difference]: Without dead ends: 86703 [2020-10-28 19:11:31,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-28 19:11:31,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86703 states. [2020-10-28 19:11:35,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86703 to 48426. [2020-10-28 19:11:35,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48426 states. [2020-10-28 19:11:35,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48426 states to 48426 states and 70253 transitions. [2020-10-28 19:11:35,596 INFO L78 Accepts]: Start accepts. Automaton has 48426 states and 70253 transitions. Word has length 104 [2020-10-28 19:11:35,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:11:35,596 INFO L481 AbstractCegarLoop]: Abstraction has 48426 states and 70253 transitions. [2020-10-28 19:11:35,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 19:11:35,596 INFO L276 IsEmpty]: Start isEmpty. Operand 48426 states and 70253 transitions. [2020-10-28 19:11:35,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 19:11:35,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:11:35,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:11:35,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 19:11:35,618 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:11:35,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:11:35,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1759733948, now seen corresponding path program 1 times [2020-10-28 19:11:35,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:11:35,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667574968] [2020-10-28 19:11:35,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:11:35,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:35,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:35,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:35,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:36,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:36,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:39,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:39,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 19:11:39,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:11:39,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3413 [2020-10-28 19:11:39,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:39,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:39,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 19:11:39,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 19:11:39,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 19:11:39,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:11:39,488 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 19:11:39,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:11:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:39,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:39,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:39,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:11:39,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:11:39,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 19:11:39,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:39,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:39,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:11:39,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:11:39,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 19:11:39,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:11:39,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:11:39,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667574968] [2020-10-28 19:11:39,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:11:39,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 19:11:39,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898906301] [2020-10-28 19:11:39,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 19:11:39,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:11:39,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 19:11:39,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 19:11:39,539 INFO L87 Difference]: Start difference. First operand 48426 states and 70253 transitions. Second operand 8 states. [2020-10-28 19:11:39,956 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-28 19:11:42,230 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 19:11:48,365 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-28 19:12:05,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:12:05,174 INFO L93 Difference]: Finished difference Result 274540 states and 396545 transitions. [2020-10-28 19:12:05,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 19:12:05,174 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 104 [2020-10-28 19:12:05,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:12:05,614 INFO L225 Difference]: With dead ends: 274540 [2020-10-28 19:12:05,614 INFO L226 Difference]: Without dead ends: 253977 [2020-10-28 19:12:05,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-28 19:12:06,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253977 states. [2020-10-28 19:12:12,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253977 to 49462. [2020-10-28 19:12:12,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49462 states. [2020-10-28 19:12:12,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49462 states to 49462 states and 71637 transitions. [2020-10-28 19:12:12,446 INFO L78 Accepts]: Start accepts. Automaton has 49462 states and 71637 transitions. Word has length 104 [2020-10-28 19:12:12,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:12:12,446 INFO L481 AbstractCegarLoop]: Abstraction has 49462 states and 71637 transitions. [2020-10-28 19:12:12,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 19:12:12,447 INFO L276 IsEmpty]: Start isEmpty. Operand 49462 states and 71637 transitions. [2020-10-28 19:12:12,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 19:12:12,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:12:12,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:12:12,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 19:12:12,470 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:12:12,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:12:12,471 INFO L82 PathProgramCache]: Analyzing trace with hash 631158261, now seen corresponding path program 1 times [2020-10-28 19:12:12,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:12:12,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340070914] [2020-10-28 19:12:12,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:12:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:12:12,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:12,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:12,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:13,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:13,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:15,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:12:15,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 19:12:15,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:12:15,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2786 [2020-10-28 19:12:15,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:12:15,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:12:15,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 19:12:15,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 19:12:15,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 19:12:15,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:12:15,808 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 19:12:15,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:12:15,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:12:15,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:15,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:12:15,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:12:15,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:12:15,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 19:12:15,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:12:15,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:12:15,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:12:15,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:12:15,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 19:12:15,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:12:15,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:12:15,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340070914] [2020-10-28 19:12:15,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:12:15,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 19:12:15,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601012129] [2020-10-28 19:12:15,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 19:12:15,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:12:15,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 19:12:15,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 19:12:15,876 INFO L87 Difference]: Start difference. First operand 49462 states and 71637 transitions. Second operand 8 states. [2020-10-28 19:12:16,254 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-28 19:12:18,937 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 19:12:27,701 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 19:12:50,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:12:50,219 INFO L93 Difference]: Finished difference Result 323914 states and 470235 transitions. [2020-10-28 19:12:50,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 19:12:50,219 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 104 [2020-10-28 19:12:50,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:12:50,920 INFO L225 Difference]: With dead ends: 323914 [2020-10-28 19:12:50,920 INFO L226 Difference]: Without dead ends: 281511 [2020-10-28 19:12:51,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-28 19:12:51,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281511 states. [2020-10-28 19:12:58,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281511 to 51858. [2020-10-28 19:12:58,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51858 states. [2020-10-28 19:12:58,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51858 states to 51858 states and 74109 transitions. [2020-10-28 19:12:58,578 INFO L78 Accepts]: Start accepts. Automaton has 51858 states and 74109 transitions. Word has length 104 [2020-10-28 19:12:58,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:12:58,578 INFO L481 AbstractCegarLoop]: Abstraction has 51858 states and 74109 transitions. [2020-10-28 19:12:58,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 19:12:58,579 INFO L276 IsEmpty]: Start isEmpty. Operand 51858 states and 74109 transitions. [2020-10-28 19:12:58,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 19:12:58,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:12:58,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:12:58,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 19:12:58,600 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:12:58,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:12:58,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1322475805, now seen corresponding path program 1 times [2020-10-28 19:12:58,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:12:58,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676838972] [2020-10-28 19:12:58,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:12:58,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:12:58,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:58,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:58,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:59,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:59,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:59,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:00,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:00,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:00,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:00,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:01,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:03,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:13:03,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 19:13:03,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 19:13:03,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 19:13:03,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:13:03,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:13:03,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 19:13:03,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 19:13:03,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 19:13:03,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:13:04,035 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 19:13:04,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:13:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:13:04,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:04,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:13:04,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:13:04,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:13:04,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 19:13:04,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:13:04,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:13:04,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:13:04,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:13:04,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:13:04,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:13:04,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:13:04,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676838972] [2020-10-28 19:13:04,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:13:04,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 19:13:04,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441423660] [2020-10-28 19:13:04,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 19:13:04,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:13:04,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 19:13:04,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:13:04,087 INFO L87 Difference]: Start difference. First operand 51858 states and 74109 transitions. Second operand 6 states. [2020-10-28 19:13:04,523 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-28 19:13:08,919 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-28 19:13:09,687 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 200