/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/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 17:50:49,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:50:49,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:50:49,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:50:49,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:50:49,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:50:49,972 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:50:49,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:50:49,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:50:49,986 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:50:49,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:50:49,990 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:50:49,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:50:49,993 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:50:49,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:50:49,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:50:49,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:50:50,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:50:50,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:50:50,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:50:50,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:50:50,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:50:50,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:50:50,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:50:50,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:50:50,051 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:50:50,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:50:50,053 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:50:50,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:50:50,055 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:50:50,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:50:50,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:50:50,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:50:50,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:50:50,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:50:50,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:50:50,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:50:50,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:50:50,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:50:50,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:50:50,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:50:50,072 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 17:50:50,123 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:50:50,124 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:50:50,127 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:50:50,128 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:50:50,128 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:50:50,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:50:50,128 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:50:50,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:50:50,129 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:50:50,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:50:50,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:50:50,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:50:50,131 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:50:50,131 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:50:50,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:50:50,131 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:50:50,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:50:50,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:50:50,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:50:50,132 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:50:50,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:50:50,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:50:50,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:50:50,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:50:50,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:50:50,134 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:50:50,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:50:50,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:50:50,134 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:50:50,134 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:50:50,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:50:50,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:50:50,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:50:50,615 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:50:50,615 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:50:50,617 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c [2020-10-28 17:50:50,716 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36122a9a0/12b3b387f7234c448c1587bfee7e0116/FLAG278e2e8fc [2020-10-28 17:50:51,412 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:50:51,414 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c [2020-10-28 17:50:51,431 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36122a9a0/12b3b387f7234c448c1587bfee7e0116/FLAG278e2e8fc [2020-10-28 17:50:51,745 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36122a9a0/12b3b387f7234c448c1587bfee7e0116 [2020-10-28 17:50:51,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:50:51,755 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:50:51,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:50:51,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:50:51,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:50:51,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:50:51" (1/1) ... [2020-10-28 17:50:51,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bd8fcaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:50:51, skipping insertion in model container [2020-10-28 17:50:51,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:50:51" (1/1) ... [2020-10-28 17:50:51,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:50:51,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:50:52,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:50:52,067 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:50:52,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:50:52,209 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:50:52,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:50:52 WrapperNode [2020-10-28 17:50:52,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:50:52,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:50:52,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:50:52,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:50:52,223 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:50:52" (1/1) ... [2020-10-28 17:50:52,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:50:52" (1/1) ... [2020-10-28 17:50:52,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:50:52" (1/1) ... [2020-10-28 17:50:52,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:50:52" (1/1) ... [2020-10-28 17:50:52,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:50:52" (1/1) ... [2020-10-28 17:50:52,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:50:52" (1/1) ... [2020-10-28 17:50:52,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:50:52" (1/1) ... [2020-10-28 17:50:52,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:50:52,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:50:52,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:50:52,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:50:52,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:50:52" (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 17:50:52,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:50:52,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:50:52,379 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:50:52,380 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-28 17:50:52,380 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-28 17:50:52,380 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-28 17:50:52,380 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-28 17:50:52,380 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-28 17:50:52,380 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-28 17:50:52,381 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:50:52,381 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-28 17:50:52,381 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:50:52,381 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:50:52,381 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:50:52,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:50:52,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 17:50:52,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 17:50:52,382 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 17:50:52,382 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 17:50:52,382 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 17:50:52,382 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 17:50:52,383 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 17:50:52,383 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 17:50:52,383 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 17:50:52,383 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 17:50:52,383 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 17:50:52,383 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:50:52,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:50:52,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:50:52,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:50:52,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:50:52,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:50:52,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:50:53,138 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:50:53,138 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 17:50:53,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:50:53 BoogieIcfgContainer [2020-10-28 17:50:53,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:50:53,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:50:53,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:50:53,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:50:53,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:50:51" (1/3) ... [2020-10-28 17:50:53,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f4005ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:50:53, skipping insertion in model container [2020-10-28 17:50:53,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:50:52" (2/3) ... [2020-10-28 17:50:53,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f4005ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:50:53, skipping insertion in model container [2020-10-28 17:50:53,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:50:53" (3/3) ... [2020-10-28 17:50:53,150 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c [2020-10-28 17:50:53,162 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:50:53,167 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:50:53,181 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:50:53,210 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:50:53,211 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:50:53,211 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:50:53,211 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:50:53,211 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:50:53,211 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:50:53,211 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:50:53,212 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:50:53,233 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states. [2020-10-28 17:50:53,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 17:50:53,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:50:53,245 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] [2020-10-28 17:50:53,245 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:50:53,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:50:53,252 INFO L82 PathProgramCache]: Analyzing trace with hash -51277868, now seen corresponding path program 1 times [2020-10-28 17:50:53,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:50:53,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130025126] [2020-10-28 17:50:53,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:50:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:53,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:53,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:53,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 17:50:53,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:53,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 437 [2020-10-28 17:50:53,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:53,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:53,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:53,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 17:50:53,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:53,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:50:54,266 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-28 17:50:54,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:50:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:54,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:54,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:54,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:50:54,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:54,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 17:50:54,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:54,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:54,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:54,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:54,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:54,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:50:54,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:50:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:54,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:54,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:54,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:50:54,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:54,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:50:54,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:54,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:54,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:54,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:54,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:54,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:50:54,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 17:50:54,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:54,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:54,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:54,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:54,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:54,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:50:54,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:54,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:54,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:54,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:50:54,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:54,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:50:54,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:50:54,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:54,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:54,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:54,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:54,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:54,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:50:54,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:54,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:54,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:54,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:50:54,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:54,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:50:54,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 17:50:54,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:54,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:54,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:54,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:54,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:54,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:50:54,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:54,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:54,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:54,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:50:54,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:54,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:50:54,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 17:50:54,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:54,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:54,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:54,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:54,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:54,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:50:54,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:54,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:54,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:54,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:50:54,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:54,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:50:54,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-28 17:50:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:54,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:54,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:54,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:50:54,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:54,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:50:54,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:54,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:54,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:54,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:50:54,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:54,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:50:54,507 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 17:50:54,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130025126] [2020-10-28 17:50:54,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:50:54,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 17:50:54,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286808811] [2020-10-28 17:50:54,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 17:50:54,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:50:54,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 17:50:54,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:50:54,534 INFO L87 Difference]: Start difference. First operand 131 states. Second operand 7 states. [2020-10-28 17:50:55,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:50:55,439 INFO L93 Difference]: Finished difference Result 226 states and 331 transitions. [2020-10-28 17:50:55,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 17:50:55,441 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2020-10-28 17:50:55,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:50:55,453 INFO L225 Difference]: With dead ends: 226 [2020-10-28 17:50:55,454 INFO L226 Difference]: Without dead ends: 127 [2020-10-28 17:50:55,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:50:55,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-28 17:50:55,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 123. [2020-10-28 17:50:55,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-28 17:50:55,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 184 transitions. [2020-10-28 17:50:55,526 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 184 transitions. Word has length 57 [2020-10-28 17:50:55,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:50:55,527 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 184 transitions. [2020-10-28 17:50:55,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 17:50:55,527 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 184 transitions. [2020-10-28 17:50:55,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 17:50:55,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:50:55,530 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] [2020-10-28 17:50:55,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:50:55,531 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:50:55,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:50:55,531 INFO L82 PathProgramCache]: Analyzing trace with hash -2100665710, now seen corresponding path program 1 times [2020-10-28 17:50:55,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:50:55,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147701109] [2020-10-28 17:50:55,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:50:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:55,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:56,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:56,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 17:50:56,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:56,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 510 [2020-10-28 17:50:56,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:56,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:56,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:50:56,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:50:56,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:50:56,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:50:56,355 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-28 17:50:56,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:50:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:56,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:56,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:56,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:50:56,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:56,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:50:56,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:56,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:56,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:56,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:56,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:56,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:50:56,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:50:56,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:56,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:56,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:56,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:50:56,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:56,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:50:56,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:56,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:56,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:50:56,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:56,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:50:56,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:56,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 17:50:56,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:56,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:56,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:56,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:56,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:56,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:50:56,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:56,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:56,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:56,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:50:56,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:56,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:50:56,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:50:56,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:56,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:56,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:56,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:56,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:56,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:50:56,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:56,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:56,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:56,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:50:56,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:56,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:50:56,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 17:50:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:56,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:56,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:56,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:56,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:56,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:50:56,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:56,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:56,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:56,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:50:56,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:56,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:50:56,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 17:50:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:56,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:56,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:56,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:56,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:56,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:50:56,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:56,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:56,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:56,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:50:56,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:56,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:56,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-28 17:50:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:56,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:56,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:56,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:50:56,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:56,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:50:56,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:56,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:56,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:56,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:50:56,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:56,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:56,601 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 17:50:56,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147701109] [2020-10-28 17:50:56,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:50:56,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 17:50:56,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838767157] [2020-10-28 17:50:56,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:50:56,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:50:56,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:50:56,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:50:56,606 INFO L87 Difference]: Start difference. First operand 123 states and 184 transitions. Second operand 11 states. [2020-10-28 17:50:56,807 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 17:50:57,007 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-28 17:50:58,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:50:58,388 INFO L93 Difference]: Finished difference Result 228 states and 332 transitions. [2020-10-28 17:50:58,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 17:50:58,389 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-28 17:50:58,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:50:58,393 INFO L225 Difference]: With dead ends: 228 [2020-10-28 17:50:58,393 INFO L226 Difference]: Without dead ends: 137 [2020-10-28 17:50:58,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:50:58,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-28 17:50:58,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 123. [2020-10-28 17:50:58,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-28 17:50:58,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 160 transitions. [2020-10-28 17:50:58,417 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 160 transitions. Word has length 57 [2020-10-28 17:50:58,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:50:58,417 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 160 transitions. [2020-10-28 17:50:58,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:50:58,418 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 160 transitions. [2020-10-28 17:50:58,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-28 17:50:58,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:50:58,420 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] [2020-10-28 17:50:58,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 17:50:58,420 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:50:58,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:50:58,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1378617896, now seen corresponding path program 1 times [2020-10-28 17:50:58,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:50:58,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348642558] [2020-10-28 17:50:58,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:50:58,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:58,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:58,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:58,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:58,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:03,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:03,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 17:51:03,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:51:03,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 17:51:03,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:03,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:03,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:51:03,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 17:51:03,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 17:51:03,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:51:03,716 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-28 17:51:03,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:51:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:03,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:03,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:03,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:51:03,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:03,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:51:03,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:03,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:03,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:51:03,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:03,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:51:03,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:03,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:51:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:03,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:03,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:03,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 17:51:03,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:03,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 17:51:03,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:03,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:03,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:03,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:03,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 17:51:03,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:51:03,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:51:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:03,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:03,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:03,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:51:03,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:03,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:51:03,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:03,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:03,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:03,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:03,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:51:03,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:51:03,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:51:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:03,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:03,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:03,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:51:03,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:03,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:51:03,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:03,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:03,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:03,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:03,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:51:03,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:03,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 17:51:03,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:03,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:03,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:03,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:51:03,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:03,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:51:03,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:03,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:03,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:03,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:03,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:51:03,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:51:03,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 17:51:03,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:03,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:03,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:03,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:51:03,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:03,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:51:03,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:03,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:03,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:51:03,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:51:03,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:51:03,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:04,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:51:04,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:04,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:04,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:04,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:51:04,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:04,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:51:04,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:04,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:04,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:51:04,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:51:04,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:51:04,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:51:04,049 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 17:51:04,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348642558] [2020-10-28 17:51:04,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:51:04,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 17:51:04,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827563023] [2020-10-28 17:51:04,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:51:04,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:51:04,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:51:04,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:51:04,058 INFO L87 Difference]: Start difference. First operand 123 states and 160 transitions. Second operand 10 states. [2020-10-28 17:51:04,291 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-28 17:51:06,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:51:06,173 INFO L93 Difference]: Finished difference Result 288 states and 393 transitions. [2020-10-28 17:51:06,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 17:51:06,174 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 80 [2020-10-28 17:51:06,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:51:06,178 INFO L225 Difference]: With dead ends: 288 [2020-10-28 17:51:06,178 INFO L226 Difference]: Without dead ends: 203 [2020-10-28 17:51:06,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-28 17:51:06,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-28 17:51:06,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 193. [2020-10-28 17:51:06,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-28 17:51:06,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 260 transitions. [2020-10-28 17:51:06,233 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 260 transitions. Word has length 80 [2020-10-28 17:51:06,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:51:06,233 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 260 transitions. [2020-10-28 17:51:06,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:51:06,234 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 260 transitions. [2020-10-28 17:51:06,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-28 17:51:06,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:51:06,242 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] [2020-10-28 17:51:06,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 17:51:06,242 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:51:06,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:51:06,243 INFO L82 PathProgramCache]: Analyzing trace with hash -628088450, now seen corresponding path program 1 times [2020-10-28 17:51:06,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:51:06,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485647733] [2020-10-28 17:51:06,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:51:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:06,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:06,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:06,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:08,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:08,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 17:51:08,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:51:08,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2229 [2020-10-28 17:51:08,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:08,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:08,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:51:08,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 17:51:08,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 17:51:08,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:08,738 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-28 17:51:08,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:51:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:08,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:08,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:08,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:51:08,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:08,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:51:08,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:08,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:08,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:51:08,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:08,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:51:08,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:08,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:51:08,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:08,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:08,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:08,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 17:51:08,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:08,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:51:08,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:08,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:08,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:08,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:08,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:51:08,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:51:08,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:51:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:08,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:08,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:08,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:51:08,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:08,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:51:08,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:08,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:08,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:08,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:08,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:51:08,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:51:08,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:51:08,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:08,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:08,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:08,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:51:08,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:08,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:51:08,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:08,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:08,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:08,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:08,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:51:08,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:08,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 17:51:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:08,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:08,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:08,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:51:08,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:08,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:51:08,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:08,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:08,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:51:08,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:51:08,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:51:08,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:08,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 17:51:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:08,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:08,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:08,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:51:08,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:08,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:51:08,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:08,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:08,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:51:08,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 17:51:08,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:51:08,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:51:08,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 17:51:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:08,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:09,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:09,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:51:09,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:09,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:51:09,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:09,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:09,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:51:09,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:51:09,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:51:09,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:09,023 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 17:51:09,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485647733] [2020-10-28 17:51:09,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:51:09,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 17:51:09,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416255932] [2020-10-28 17:51:09,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:51:09,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:51:09,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:51:09,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:51:09,028 INFO L87 Difference]: Start difference. First operand 193 states and 260 transitions. Second operand 10 states. [2020-10-28 17:51:09,258 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-28 17:51:11,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:51:11,056 INFO L93 Difference]: Finished difference Result 491 states and 680 transitions. [2020-10-28 17:51:11,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 17:51:11,060 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 81 [2020-10-28 17:51:11,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:51:11,065 INFO L225 Difference]: With dead ends: 491 [2020-10-28 17:51:11,065 INFO L226 Difference]: Without dead ends: 336 [2020-10-28 17:51:11,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-28 17:51:11,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-10-28 17:51:11,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 321. [2020-10-28 17:51:11,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-10-28 17:51:11,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 440 transitions. [2020-10-28 17:51:11,134 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 440 transitions. Word has length 81 [2020-10-28 17:51:11,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:51:11,134 INFO L481 AbstractCegarLoop]: Abstraction has 321 states and 440 transitions. [2020-10-28 17:51:11,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:51:11,134 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 440 transitions. [2020-10-28 17:51:11,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-28 17:51:11,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:51:11,136 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] [2020-10-28 17:51:11,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 17:51:11,137 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:51:11,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:51:11,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1785409830, now seen corresponding path program 1 times [2020-10-28 17:51:11,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:51:11,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871138258] [2020-10-28 17:51:11,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:51:11,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:11,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:11,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:12,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:12,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-28 17:51:12,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:51:12,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1030 [2020-10-28 17:51:12,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:12,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:12,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:51:12,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 17:51:12,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 17:51:12,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:12,415 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-28 17:51:12,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:51:12,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:12,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:12,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:12,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:51:12,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:12,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:51:12,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:12,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:12,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:51:12,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:12,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:51:12,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:12,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:51:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:12,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:12,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:12,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 17:51:12,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:12,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:51:12,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:12,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:12,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:12,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:12,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:51:12,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:51:12,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:51:12,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:12,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:12,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:12,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:51:12,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:12,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:51:12,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:12,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:12,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:12,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:12,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:51:12,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:51:12,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:51:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:12,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:12,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:12,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:51:12,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:12,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 17:51:12,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:12,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:12,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:51:12,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:51:12,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:51:12,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:12,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 17:51:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:12,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:12,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:12,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:51:12,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:12,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:51:12,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:12,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:12,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:51:12,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 17:51:12,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:51:12,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:51:12,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:51:12,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:12,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:12,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:12,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:51:12,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:12,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:51:12,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:12,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:12,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:51:12,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 17:51:12,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:51:12,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:12,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 17:51:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:12,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:12,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:12,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:51:12,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:12,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:51:12,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:12,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:12,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:51:12,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:51:12,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:51:12,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:12,716 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 17:51:12,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871138258] [2020-10-28 17:51:12,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:51:12,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 17:51:12,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104603679] [2020-10-28 17:51:12,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:51:12,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:51:12,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:51:12,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:51:12,719 INFO L87 Difference]: Start difference. First operand 321 states and 440 transitions. Second operand 10 states. [2020-10-28 17:51:12,966 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-28 17:51:15,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:51:15,047 INFO L93 Difference]: Finished difference Result 859 states and 1192 transitions. [2020-10-28 17:51:15,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 17:51:15,048 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 82 [2020-10-28 17:51:15,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:51:15,053 INFO L225 Difference]: With dead ends: 859 [2020-10-28 17:51:15,053 INFO L226 Difference]: Without dead ends: 576 [2020-10-28 17:51:15,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-28 17:51:15,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2020-10-28 17:51:15,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 553. [2020-10-28 17:51:15,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2020-10-28 17:51:15,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 760 transitions. [2020-10-28 17:51:15,115 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 760 transitions. Word has length 82 [2020-10-28 17:51:15,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:51:15,116 INFO L481 AbstractCegarLoop]: Abstraction has 553 states and 760 transitions. [2020-10-28 17:51:15,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:51:15,116 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 760 transitions. [2020-10-28 17:51:15,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-28 17:51:15,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:51:15,118 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] [2020-10-28 17:51:15,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 17:51:15,118 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:51:15,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:51:15,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1805841370, now seen corresponding path program 1 times [2020-10-28 17:51:15,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:51:15,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652264598] [2020-10-28 17:51:15,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:51:15,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:15,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:15,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:17,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:17,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 17:51:17,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:51:17,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2547 [2020-10-28 17:51:17,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:17,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:17,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:51:17,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 17:51:17,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 17:51:17,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:17,933 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-28 17:51:17,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:51:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:17,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:17,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:17,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:51:17,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:17,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:51:17,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:17,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:17,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:51:17,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:17,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:51:17,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:17,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:51:17,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:17,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:17,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:17,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 17:51:17,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:17,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:51:17,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:17,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:17,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:17,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:17,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 17:51:17,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:18,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:51:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:18,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:18,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:18,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:51:18,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:18,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:51:18,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:18,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:18,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:51:18,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:18,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:51:18,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:18,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:51:18,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:18,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:18,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:18,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:51:18,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:18,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:51:18,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:18,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:18,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:51:18,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:18,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:51:18,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:18,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:51:18,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:18,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:18,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:18,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:51:18,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:18,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:51:18,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:18,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:18,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:51:18,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:18,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:51:18,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:18,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 17:51:18,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:18,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:18,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:18,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:51:18,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:18,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:51:18,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:18,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:18,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:18,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:51:18,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:51:18,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:18,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 17:51:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:18,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:18,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:18,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:51:18,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:18,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:51:18,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:18,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:18,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:51:18,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:51:18,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:51:18,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:18,295 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 17:51:18,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652264598] [2020-10-28 17:51:18,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:51:18,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-28 17:51:18,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512338645] [2020-10-28 17:51:18,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 17:51:18,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:51:18,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 17:51:18,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:51:18,298 INFO L87 Difference]: Start difference. First operand 553 states and 760 transitions. Second operand 15 states. [2020-10-28 17:51:18,645 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-28 17:51:18,923 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-28 17:51:19,556 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-28 17:51:20,162 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-28 17:51:20,407 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-28 17:51:20,658 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-28 17:51:21,620 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-28 17:51:21,881 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-28 17:51:22,157 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-28 17:51:22,422 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-28 17:51:22,670 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-28 17:51:22,951 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-28 17:51:23,214 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-28 17:51:24,848 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-28 17:51:25,107 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-28 17:51:25,380 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-28 17:51:25,644 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-28 17:51:25,925 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-28 17:51:26,170 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-28 17:51:26,432 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-28 17:51:26,686 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-28 17:51:26,970 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-28 17:51:27,219 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-28 17:51:27,500 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-28 17:51:27,755 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-28 17:51:28,130 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-28 17:51:28,374 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-28 17:51:42,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:51:42,454 INFO L93 Difference]: Finished difference Result 7650 states and 11061 transitions. [2020-10-28 17:51:42,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2020-10-28 17:51:42,455 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 83 [2020-10-28 17:51:42,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:51:42,518 INFO L225 Difference]: With dead ends: 7650 [2020-10-28 17:51:42,518 INFO L226 Difference]: Without dead ends: 7135 [2020-10-28 17:51:42,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7326 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=2317, Invalid=16589, Unknown=0, NotChecked=0, Total=18906 [2020-10-28 17:51:42,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7135 states. [2020-10-28 17:51:43,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7135 to 7004. [2020-10-28 17:51:43,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7004 states. [2020-10-28 17:51:43,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7004 states to 7004 states and 9330 transitions. [2020-10-28 17:51:43,253 INFO L78 Accepts]: Start accepts. Automaton has 7004 states and 9330 transitions. Word has length 83 [2020-10-28 17:51:43,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:51:43,253 INFO L481 AbstractCegarLoop]: Abstraction has 7004 states and 9330 transitions. [2020-10-28 17:51:43,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 17:51:43,253 INFO L276 IsEmpty]: Start isEmpty. Operand 7004 states and 9330 transitions. [2020-10-28 17:51:43,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-28 17:51:43,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:51:43,256 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] [2020-10-28 17:51:43,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 17:51:43,256 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:51:43,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:51:43,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1870254260, now seen corresponding path program 1 times [2020-10-28 17:51:43,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:51:43,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813385460] [2020-10-28 17:51:43,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:51:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:43,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:43,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:44,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:44,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 17:51:44,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:51:44,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1132 [2020-10-28 17:51:44,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:44,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:44,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:51:44,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 17:51:44,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 17:51:44,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:44,645 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-28 17:51:44,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:51:44,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:44,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:44,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:44,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:51:44,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:44,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:51:44,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:44,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:44,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:51:44,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:44,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:51:44,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:44,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:51:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:44,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:44,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:44,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 17:51:44,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:44,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:51:44,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:44,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:44,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:44,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:44,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:51:44,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:44,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:51:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:44,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:44,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:44,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:51:44,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:44,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:51:44,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:44,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:44,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:51:44,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:51:44,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:51:44,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:44,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:51:44,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:44,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:44,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:44,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:51:44,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:44,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:51:44,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:44,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:44,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:51:44,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 17:51:44,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:51:44,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:44,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:51:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:44,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:44,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:44,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:51:44,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:44,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:51:44,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:44,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:44,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:51:44,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 17:51:44,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:51:44,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:44,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 17:51:44,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:44,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:44,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:44,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:51:44,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:44,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:51:44,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:44,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:44,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:51:44,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 17:51:44,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:51:44,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:44,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 17:51:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:44,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:44,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:44,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:51:44,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:44,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:51:44,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:44,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:44,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:51:44,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:51:44,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:51:44,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:44,938 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 17:51:44,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813385460] [2020-10-28 17:51:44,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:51:44,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 17:51:44,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740109871] [2020-10-28 17:51:44,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:51:44,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:51:44,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:51:44,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:51:44,941 INFO L87 Difference]: Start difference. First operand 7004 states and 9330 transitions. Second operand 10 states. [2020-10-28 17:51:45,177 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-28 17:51:48,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:51:48,308 INFO L93 Difference]: Finished difference Result 20107 states and 26955 transitions. [2020-10-28 17:51:48,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 17:51:48,309 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-10-28 17:51:48,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:51:48,396 INFO L225 Difference]: With dead ends: 20107 [2020-10-28 17:51:48,397 INFO L226 Difference]: Without dead ends: 13150 [2020-10-28 17:51:48,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-28 17:51:48,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13150 states. [2020-10-28 17:51:49,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13150 to 12974. [2020-10-28 17:51:49,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12974 states. [2020-10-28 17:51:49,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12974 states to 12974 states and 17203 transitions. [2020-10-28 17:51:49,842 INFO L78 Accepts]: Start accepts. Automaton has 12974 states and 17203 transitions. Word has length 83 [2020-10-28 17:51:49,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:51:49,842 INFO L481 AbstractCegarLoop]: Abstraction has 12974 states and 17203 transitions. [2020-10-28 17:51:49,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:51:49,843 INFO L276 IsEmpty]: Start isEmpty. Operand 12974 states and 17203 transitions. [2020-10-28 17:51:49,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-28 17:51:49,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:51:49,845 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] [2020-10-28 17:51:49,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 17:51:49,845 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:51:49,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:51:49,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1104909317, now seen corresponding path program 1 times [2020-10-28 17:51:49,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:51:49,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140660329] [2020-10-28 17:51:49,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:51:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:49,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:50,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:50,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 17:51:50,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:50,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 506 [2020-10-28 17:51:50,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:50,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:50,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 17:51:50,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 17:51:50,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 17:51:50,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:50,615 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-28 17:51:50,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:51:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:50,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:50,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:50,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:51:50,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:50,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:51:50,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:50,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:50,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:51:50,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:50,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:51:50,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:50,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:51:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:50,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:50,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:50,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 17:51:50,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:50,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 17:51:50,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:50,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:50,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:51:50,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:50,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:51:50,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:50,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:51:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:50,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:50,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:50,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:51:50,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:50,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:51:50,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:50,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:50,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:51:50,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:51:50,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:51:50,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:50,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:51:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:50,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:50,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:50,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:51:50,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:50,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 17:51:50,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:50,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:50,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:51:50,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:51:50,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:51:50,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:50,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 17:51:50,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:50,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:50,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:50,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:51:50,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:50,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:51:50,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:50,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:50,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:51:50,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:51:50,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:51:50,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:50,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 17:51:50,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:50,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:50,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:50,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:51:50,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:50,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:51:50,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:50,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:50,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:51:50,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:51:50,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:51:50,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:51,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-28 17:51:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:51,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:51,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:51,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:51:51,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:51,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:51:51,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:51,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:51,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:51,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:51:51,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:51:51,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:51,086 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 17:51:51,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140660329] [2020-10-28 17:51:51,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:51:51,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-28 17:51:51,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289123958] [2020-10-28 17:51:51,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 17:51:51,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:51:51,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 17:51:51,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-10-28 17:51:51,089 INFO L87 Difference]: Start difference. First operand 12974 states and 17203 transitions. Second operand 16 states. [2020-10-28 17:51:51,383 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-28 17:51:51,739 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-28 17:51:51,983 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 17:51:52,225 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-28 17:51:53,599 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-28 17:51:55,318 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-10-28 17:51:56,020 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-28 17:51:56,189 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-28 17:51:56,942 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 145 [2020-10-28 17:51:57,676 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 147 [2020-10-28 17:51:58,308 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 148 [2020-10-28 17:51:59,850 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-10-28 17:52:00,007 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-10-28 17:52:00,157 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-28 17:52:01,343 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-10-28 17:52:01,499 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-10-28 17:52:01,912 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-10-28 17:52:02,633 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-28 17:52:02,988 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-10-28 17:52:03,175 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-10-28 17:52:03,501 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-10-28 17:52:04,147 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-28 17:52:04,560 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-10-28 17:52:04,810 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-10-28 17:52:05,097 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-10-28 17:52:08,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:52:08,299 INFO L93 Difference]: Finished difference Result 105051 states and 140800 transitions. [2020-10-28 17:52:08,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-10-28 17:52:08,300 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 84 [2020-10-28 17:52:08,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:52:08,772 INFO L225 Difference]: With dead ends: 105051 [2020-10-28 17:52:08,772 INFO L226 Difference]: Without dead ends: 92240 [2020-10-28 17:52:08,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1590 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=1036, Invalid=3934, Unknown=0, NotChecked=0, Total=4970 [2020-10-28 17:52:08,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92240 states. [2020-10-28 17:52:15,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92240 to 66294. [2020-10-28 17:52:15,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66294 states. [2020-10-28 17:52:15,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66294 states to 66294 states and 88299 transitions. [2020-10-28 17:52:15,518 INFO L78 Accepts]: Start accepts. Automaton has 66294 states and 88299 transitions. Word has length 84 [2020-10-28 17:52:15,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:52:15,519 INFO L481 AbstractCegarLoop]: Abstraction has 66294 states and 88299 transitions. [2020-10-28 17:52:15,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 17:52:15,519 INFO L276 IsEmpty]: Start isEmpty. Operand 66294 states and 88299 transitions. [2020-10-28 17:52:15,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-28 17:52:15,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:52:15,521 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] [2020-10-28 17:52:15,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 17:52:15,521 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:52:15,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:52:15,522 INFO L82 PathProgramCache]: Analyzing trace with hash -893926015, now seen corresponding path program 1 times [2020-10-28 17:52:15,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:52:15,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775305789] [2020-10-28 17:52:15,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:52:15,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:15,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:16,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:16,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 17:52:16,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:16,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 547 [2020-10-28 17:52:16,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:16,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:16,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:52:16,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-28 17:52:16,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:52:16,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:16,358 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-28 17:52:16,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:52:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:16,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:16,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:16,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:52:16,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:16,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:52:16,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:16,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:16,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:52:16,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:52:16,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:52:16,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:16,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:52:16,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:16,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:16,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:16,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 17:52:16,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:16,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:52:16,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:16,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:16,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:52:16,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:52:16,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:52:16,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:52:16,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:52:16,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:16,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:16,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:16,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:52:16,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:16,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:52:16,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:16,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:16,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:52:16,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:52:16,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:52:16,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:16,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:52:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:16,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:16,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:16,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:52:16,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:16,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:52:16,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:16,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:16,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:52:16,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:52:16,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:52:16,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:16,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 17:52:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:16,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:16,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:16,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:52:16,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:16,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:52:16,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:16,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:16,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:52:16,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:52:16,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:52:16,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:16,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 17:52:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:16,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:16,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:16,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:52:16,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:16,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:52:16,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:16,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:16,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:52:16,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:52:16,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:52:16,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:16,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-28 17:52:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:16,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:16,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:16,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:52:16,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:16,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:52:16,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:16,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:16,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:52:16,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:52:16,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:52:16,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:16,591 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 17:52:16,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775305789] [2020-10-28 17:52:16,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:52:16,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-28 17:52:16,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466549852] [2020-10-28 17:52:16,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 17:52:16,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:52:16,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 17:52:16,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:52:16,599 INFO L87 Difference]: Start difference. First operand 66294 states and 88299 transitions. Second operand 13 states. [2020-10-28 17:52:17,893 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 17:52:18,231 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-28 17:52:18,489 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-28 17:52:18,728 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-28 17:52:25,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:52:25,299 INFO L93 Difference]: Finished difference Result 90174 states and 126642 transitions. [2020-10-28 17:52:25,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:52:25,300 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 85 [2020-10-28 17:52:25,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:52:25,887 INFO L225 Difference]: With dead ends: 90174 [2020-10-28 17:52:25,888 INFO L226 Difference]: Without dead ends: 90171 [2020-10-28 17:52:25,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2020-10-28 17:52:26,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90171 states. [2020-10-28 17:52:33,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90171 to 77238. [2020-10-28 17:52:33,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77238 states. [2020-10-28 17:52:33,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77238 states to 77238 states and 99243 transitions. [2020-10-28 17:52:33,495 INFO L78 Accepts]: Start accepts. Automaton has 77238 states and 99243 transitions. Word has length 85 [2020-10-28 17:52:33,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:52:33,495 INFO L481 AbstractCegarLoop]: Abstraction has 77238 states and 99243 transitions. [2020-10-28 17:52:33,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 17:52:33,495 INFO L276 IsEmpty]: Start isEmpty. Operand 77238 states and 99243 transitions. [2020-10-28 17:52:33,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-28 17:52:33,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:52:33,498 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] [2020-10-28 17:52:33,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 17:52:33,498 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:52:33,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:52:33,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1208472093, now seen corresponding path program 1 times [2020-10-28 17:52:33,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:52:33,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135579659] [2020-10-28 17:52:33,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:52:33,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:33,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:33,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:33,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 17:52:33,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:33,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-28 17:52:33,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:33,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:33,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:52:33,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:52:33,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 17:52:33,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:33,901 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-28 17:52:33,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:52:33,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:33,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:33,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:33,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:52:33,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:33,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:52:33,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:33,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:33,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:52:33,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:52:33,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:52:33,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:33,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:52:33,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:33,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:33,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:33,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 17:52:33,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:33,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 17:52:33,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:33,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:33,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:52:33,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:52:33,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 17:52:33,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:33,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:52:33,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:33,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:34,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:34,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:52:34,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:34,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:52:34,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:34,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:34,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:52:34,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:52:34,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:52:34,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:52:34,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:52:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:34,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:34,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:34,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:52:34,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:34,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:52:34,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:34,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:34,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:52:34,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:52:34,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:52:34,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:34,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 17:52:34,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:34,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:34,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:34,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:52:34,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:34,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:52:34,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:34,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:34,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:52:34,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:52:34,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:52:34,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:52:34,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 17:52:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:34,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:34,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:34,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:52:34,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:34,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:52:34,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:34,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:34,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:52:34,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:52:34,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:52:34,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:34,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-28 17:52:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:34,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:34,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:34,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:52:34,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:34,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:52:34,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:34,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:34,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:52:34,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:52:34,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:52:34,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:34,184 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 17:52:34,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135579659] [2020-10-28 17:52:34,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:52:34,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 17:52:34,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189060235] [2020-10-28 17:52:34,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:52:34,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:52:34,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:52:34,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:52:34,187 INFO L87 Difference]: Start difference. First operand 77238 states and 99243 transitions. Second operand 10 states. [2020-10-28 17:52:34,425 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-28 17:52:36,662 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-28 17:52:38,816 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-10-28 17:52:39,644 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-10-28 17:52:47,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:52:47,309 INFO L93 Difference]: Finished difference Result 229520 states and 296766 transitions. [2020-10-28 17:52:47,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 17:52:47,310 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 86 [2020-10-28 17:52:47,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:52:48,274 INFO L225 Difference]: With dead ends: 229520 [2020-10-28 17:52:48,274 INFO L226 Difference]: Without dead ends: 152445 [2020-10-28 17:52:48,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2020-10-28 17:52:48,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152445 states. [2020-10-28 17:53:00,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152445 to 150982. [2020-10-28 17:53:00,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150982 states. [2020-10-28 17:53:00,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150982 states to 150982 states and 193711 transitions. [2020-10-28 17:53:00,805 INFO L78 Accepts]: Start accepts. Automaton has 150982 states and 193711 transitions. Word has length 86 [2020-10-28 17:53:00,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:53:00,806 INFO L481 AbstractCegarLoop]: Abstraction has 150982 states and 193711 transitions. [2020-10-28 17:53:00,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:53:00,806 INFO L276 IsEmpty]: Start isEmpty. Operand 150982 states and 193711 transitions. [2020-10-28 17:53:00,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-28 17:53:00,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:53:00,852 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:53:00,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 17:53:00,852 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:53:00,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:53:00,853 INFO L82 PathProgramCache]: Analyzing trace with hash -580994918, now seen corresponding path program 1 times [2020-10-28 17:53:00,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:53:00,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184249696] [2020-10-28 17:53:00,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:53:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:53:00,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:01,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:03,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:53:03,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 17:53:03,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:53:03,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2936 [2020-10-28 17:53:03,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:53:03,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:53:03,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:53:03,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:53:03,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-28 17:53:03,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:53:04,092 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-28 17:53:04,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:53:04,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:53:04,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:04,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:53:04,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:53:04,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:53:04,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:53:04,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:53:04,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:53:04,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:53:04,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:53:04,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:53:04,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:53:04,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:53:04,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:53:04,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:04,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:53:04,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 17:53:04,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:53:04,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:53:04,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:53:04,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:53:04,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:53:04,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:53:04,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 17:53:04,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:53:04,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:53:04,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:53:04,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:04,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:53:04,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:53:04,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:53:04,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:53:04,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:53:04,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:53:04,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:53:04,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:53:04,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:53:04,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:53:04,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:53:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:53:04,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:04,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:53:04,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:53:04,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:53:04,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:53:04,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:53:04,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:53:04,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:53:04,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:53:04,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:53:04,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:53:04,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 17:53:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:53:04,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:04,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:53:04,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:53:04,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:53:04,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:53:04,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:53:04,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:53:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:53:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:53:04,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:53:04,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:53:04,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 17:53:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:53:04,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:04,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:53:04,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:53:04,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:53:04,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:53:04,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:53:04,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:53:04,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:53:04,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:53:04,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:53:04,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:53:04,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-28 17:53:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:53:04,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:04,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:53:04,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:53:04,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:53:04,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:53:04,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:53:04,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:53:04,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:53:04,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:53:04,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:53:04,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:53:04,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 17:53:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:53:04,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:04,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:53:04,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:53:04,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:53:04,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:53:04,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:53:04,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:53:04,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:53:04,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:53:04,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:53:04,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:53:04,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:53:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:53:04,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:04,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:53:04,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:53:04,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:53:04,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 17:53:04,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:53:04,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:53:04,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:53:04,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:53:04,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:53:04,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:53:04,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 17:53:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:53:04,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:04,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:53:04,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:53:04,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:53:04,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:53:04,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:53:04,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:53:04,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:53:04,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:53:04,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:53:04,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:53:04,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 17:53:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:53:04,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:04,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:53:04,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:53:04,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:53:04,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:53:04,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:53:04,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:53:04,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:53:04,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:53:04,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:53:04,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:53:04,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 17:53:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:53:04,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:04,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:53:04,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:53:04,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:53:04,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:53:04,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:53:04,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:53:04,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:53:04,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:53:04,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:53:04,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:53:04,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-28 17:53:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:53:04,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:04,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:53:04,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:53:04,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:53:04,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:53:04,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:53:04,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:53:04,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:53:04,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:53:04,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:53:04,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:53:04,759 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 17:53:04,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184249696] [2020-10-28 17:53:04,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:53:04,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 17:53:04,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603324059] [2020-10-28 17:53:04,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 17:53:04,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:53:04,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 17:53:04,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:53:04,763 INFO L87 Difference]: Start difference. First operand 150982 states and 193711 transitions. Second operand 13 states. [2020-10-28 17:53:05,041 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 17:53:06,158 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-28 17:53:14,216 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-28 17:53:23,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:53:23,049 INFO L93 Difference]: Finished difference Result 343831 states and 442716 transitions. [2020-10-28 17:53:23,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-28 17:53:23,050 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 130 [2020-10-28 17:53:23,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:53:24,050 INFO L225 Difference]: With dead ends: 343831 [2020-10-28 17:53:24,050 INFO L226 Difference]: Without dead ends: 221292 [2020-10-28 17:53:24,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=290, Invalid=832, Unknown=0, NotChecked=0, Total=1122 [2020-10-28 17:53:24,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221292 states. [2020-10-28 17:53:39,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221292 to 219094. [2020-10-28 17:53:39,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219094 states. [2020-10-28 17:53:40,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219094 states to 219094 states and 280239 transitions. [2020-10-28 17:53:40,992 INFO L78 Accepts]: Start accepts. Automaton has 219094 states and 280239 transitions. Word has length 130 [2020-10-28 17:53:40,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:53:40,992 INFO L481 AbstractCegarLoop]: Abstraction has 219094 states and 280239 transitions. [2020-10-28 17:53:40,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 17:53:40,993 INFO L276 IsEmpty]: Start isEmpty. Operand 219094 states and 280239 transitions. [2020-10-28 17:53:41,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-28 17:53:41,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:53:41,028 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:53:41,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 17:53:41,028 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:53:41,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:53:41,029 INFO L82 PathProgramCache]: Analyzing trace with hash 911698196, now seen corresponding path program 1 times [2020-10-28 17:53:41,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:53:41,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866503905] [2020-10-28 17:53:41,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:53:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:53:41,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:41,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:41,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:42,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:43,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:46,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:53:46,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-28 17:53:46,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:53:46,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 17:53:46,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:53:46,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:53:46,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:53:46,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-28 17:53:46,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 17:53:46,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:53:46,304 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-28 17:53:46,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:53:46,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:53:46,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:46,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:53:46,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:53:46,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:53:46,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:53:46,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:53:46,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:53:46,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:53:46,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:53:46,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:53:46,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:53:46,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:53:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:53:46,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:46,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:53:46,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 17:53:46,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:53:46,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:53:46,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:53:46,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:53:46,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:53:46,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:53:46,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:53:46,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:53:46,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:53:46,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:53:46,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:46,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:53:46,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:53:46,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:53:46,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:53:46,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:53:46,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:53:46,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:53:46,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:53:46,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:53:46,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:53:46,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:53:46,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:53:46,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:46,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:53:46,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:53:46,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:53:46,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:53:46,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:53:46,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:53:46,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:53:46,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:53:46,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:53:46,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:53:46,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 17:53:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:53:46,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:46,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:53:46,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:53:46,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:53:46,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:53:46,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:53:46,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:53:46,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:53:46,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:53:46,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:53:46,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:53:46,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 17:53:46,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:53:46,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:46,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:53:46,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:53:46,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:53:46,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:53:46,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:53:46,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:53:46,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:53:46,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:53:46,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:53:46,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:53:46,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-28 17:53:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:53:46,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:46,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:53:46,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:53:46,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:53:46,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:53:46,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:53:46,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:53:46,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:53:46,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:53:46,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:53:46,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:53:46,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 17:53:46,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:53:46,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:46,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:53:46,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:53:46,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:53:46,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:53:46,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:53:46,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:53:46,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:53:46,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:53:46,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:53:46,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:53:46,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:53:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:53:46,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:46,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:53:46,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:53:46,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:53:46,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:53:46,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:53:46,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:53:46,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:53:46,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:53:46,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:53:46,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:53:46,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 17:53:46,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:53:46,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:46,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:53:46,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:53:46,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:53:46,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:53:46,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:53:46,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:53:46,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:53:46,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:53:46,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:53:46,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:53:46,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-28 17:53:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:53:46,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:46,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:53:46,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:53:46,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:53:46,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:53:46,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:53:46,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:53:46,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:53:46,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:53:46,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:53:46,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:53:46,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-28 17:53:46,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:53:46,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:46,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:53:46,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:53:46,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:53:46,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:53:46,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:53:46,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:53:46,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:53:46,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:53:46,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:53:46,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:53:46,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-28 17:53:46,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:53:46,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:53:46,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:53:46,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:53:46,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:53:46,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:53:46,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:53:46,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:53:46,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:53:46,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:53:46,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:53:46,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:53:46,640 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 17:53:46,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866503905] [2020-10-28 17:53:46,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:53:46,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 17:53:46,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246413772] [2020-10-28 17:53:46,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:53:46,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:53:46,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:53:46,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:53:46,642 INFO L87 Difference]: Start difference. First operand 219094 states and 280239 transitions. Second operand 10 states. [2020-10-28 17:53:46,925 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-28 17:53:47,420 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 17:54:00,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:54:00,680 INFO L93 Difference]: Finished difference Result 381951 states and 486963 transitions. [2020-10-28 17:54:00,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 17:54:00,681 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 131 [2020-10-28 17:54:00,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:54:01,432 INFO L225 Difference]: With dead ends: 381951 [2020-10-28 17:54:01,433 INFO L226 Difference]: Without dead ends: 163020 [2020-10-28 17:54:01,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2020-10-28 17:54:01,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163020 states. [2020-10-28 17:54:12,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163020 to 145027. [2020-10-28 17:54:12,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145027 states. [2020-10-28 17:54:12,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145027 states to 145027 states and 181444 transitions. [2020-10-28 17:54:12,958 INFO L78 Accepts]: Start accepts. Automaton has 145027 states and 181444 transitions. Word has length 131 [2020-10-28 17:54:12,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:54:12,959 INFO L481 AbstractCegarLoop]: Abstraction has 145027 states and 181444 transitions. [2020-10-28 17:54:12,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:54:12,959 INFO L276 IsEmpty]: Start isEmpty. Operand 145027 states and 181444 transitions. [2020-10-28 17:54:12,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-28 17:54:12,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:54:12,979 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:54:12,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 17:54:12,979 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:54:12,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:54:12,980 INFO L82 PathProgramCache]: Analyzing trace with hash 976111086, now seen corresponding path program 1 times [2020-10-28 17:54:12,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:54:12,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940549174] [2020-10-28 17:54:12,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:54:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:54:13,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:54:13,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:54:13,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:54:13,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking...