/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem06_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:36:38,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:36:38,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:36:38,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:36:38,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:36:38,263 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:36:38,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:36:38,267 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:36:38,270 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:36:38,271 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:36:38,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:36:38,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:36:38,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:36:38,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:36:38,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:36:38,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:36:38,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:36:38,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:36:38,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:36:38,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:36:38,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:36:38,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:36:38,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:36:38,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:36:38,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:36:38,311 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:36:38,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:36:38,313 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:36:38,313 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:36:38,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:36:38,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:36:38,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:36:38,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:36:38,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:36:38,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:36:38,319 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:36:38,320 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:36:38,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:36:38,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:36:38,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:36:38,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:36:38,327 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 05:36:38,380 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:36:38,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:36:38,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:36:38,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:36:38,385 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:36:38,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:36:38,385 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:36:38,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:36:38,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:36:38,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:36:38,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:36:38,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:36:38,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:36:38,388 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:36:38,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:36:38,388 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:36:38,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:36:38,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:36:38,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:36:38,389 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:36:38,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:36:38,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:36:38,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:36:38,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:36:38,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:36:38,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:36:38,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:36:38,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:36:38,391 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:36:38,392 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:36:38,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:36:38,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:36:38,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:36:38,907 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:36:38,908 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:36:38,909 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label08.c [2020-10-29 05:36:39,007 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2da377c58/5d7f4c31945d4f769e116a4843426796/FLAGb30cf20d1 [2020-10-29 05:36:40,312 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:36:40,313 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label08.c [2020-10-29 05:36:40,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2da377c58/5d7f4c31945d4f769e116a4843426796/FLAGb30cf20d1 [2020-10-29 05:36:40,517 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2da377c58/5d7f4c31945d4f769e116a4843426796 [2020-10-29 05:36:40,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:36:40,530 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:36:40,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:36:40,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:36:40,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:36:40,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:36:40" (1/1) ... [2020-10-29 05:36:40,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fcb6a42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:36:40, skipping insertion in model container [2020-10-29 05:36:40,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:36:40" (1/1) ... [2020-10-29 05:36:40,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:36:40,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:36:43,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:36:43,198 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:36:44,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:36:44,552 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:36:44,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:36:44 WrapperNode [2020-10-29 05:36:44,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:36:44,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:36:44,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:36:44,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:36:44,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:36:44" (1/1) ... [2020-10-29 05:36:44,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:36:44" (1/1) ... [2020-10-29 05:36:44,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:36:44" (1/1) ... [2020-10-29 05:36:44,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:36:44" (1/1) ... [2020-10-29 05:36:44,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:36:44" (1/1) ... [2020-10-29 05:36:44,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:36:44" (1/1) ... [2020-10-29 05:36:44,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:36:44" (1/1) ... [2020-10-29 05:36:45,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:36:45,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:36:45,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:36:45,008 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:36:45,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:36:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:36:45,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:36:45,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:36:45,244 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:36:45,244 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:36:45,244 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:36:45,244 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:36:45,245 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:36:45,245 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 05:36:45,245 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:36:45,245 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:36:45,245 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:36:45,245 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:36:45,246 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:36:45,246 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 05:36:45,246 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:36:45,246 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:36:45,246 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:36:45,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:36:45,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:36:45,247 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:36:45,247 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:36:45,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:36:45,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:36:45,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:36:45,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:36:45,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:36:45,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:36:53,214 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:36:53,214 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:36:53,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:36:53 BoogieIcfgContainer [2020-10-29 05:36:53,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:36:53,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:36:53,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:36:53,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:36:53,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:36:40" (1/3) ... [2020-10-29 05:36:53,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e09aaec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:36:53, skipping insertion in model container [2020-10-29 05:36:53,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:36:44" (2/3) ... [2020-10-29 05:36:53,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e09aaec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:36:53, skipping insertion in model container [2020-10-29 05:36:53,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:36:53" (3/3) ... [2020-10-29 05:36:53,235 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label08.c [2020-10-29 05:36:53,248 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:36:53,255 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:36:53,270 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:36:53,312 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:36:53,312 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:36:53,312 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:36:53,313 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:36:53,313 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:36:53,313 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:36:53,313 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:36:53,313 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:36:53,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states. [2020-10-29 05:36:53,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 985 [2020-10-29 05:36:53,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:36:53,423 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:36:53,424 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:36:53,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:36:53,435 INFO L82 PathProgramCache]: Analyzing trace with hash -790286680, now seen corresponding path program 1 times [2020-10-29 05:36:53,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:36:53,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400750282] [2020-10-29 05:36:53,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:36:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:36:55,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:36:58,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:36:59,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:36:59,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1002 [2020-10-29 05:36:59,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:36:59,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5108 [2020-10-29 05:36:59,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:36:59,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:36:59,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 05:36:59,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:36:59,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 993 [2020-10-29 05:36:59,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 05:37:01,306 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:37:01,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:37:01,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:37:01,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:37:01,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:37:01,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:37:01,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:37:01,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 05:37:01,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:37:01,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:37:01,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:37:01,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:37:01,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:37:01,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:37:02,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:37:02,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400750282] [2020-10-29 05:37:02,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:37:02,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:37:02,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590029477] [2020-10-29 05:37:02,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:37:02,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:37:02,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:37:02,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:37:02,992 INFO L87 Difference]: Start difference. First operand 1319 states. Second operand 4 states. [2020-10-29 05:37:03,241 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:37:20,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:37:20,900 INFO L93 Difference]: Finished difference Result 3764 states and 7025 transitions. [2020-10-29 05:37:20,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:37:20,903 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 984 [2020-10-29 05:37:20,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:37:20,964 INFO L225 Difference]: With dead ends: 3764 [2020-10-29 05:37:20,964 INFO L226 Difference]: Without dead ends: 2381 [2020-10-29 05:37:20,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:37:21,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2020-10-29 05:37:21,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 2338. [2020-10-29 05:37:21,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2338 states. [2020-10-29 05:37:21,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2338 states to 2338 states and 3805 transitions. [2020-10-29 05:37:21,177 INFO L78 Accepts]: Start accepts. Automaton has 2338 states and 3805 transitions. Word has length 984 [2020-10-29 05:37:21,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:37:21,181 INFO L481 AbstractCegarLoop]: Abstraction has 2338 states and 3805 transitions. [2020-10-29 05:37:21,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:37:21,181 INFO L276 IsEmpty]: Start isEmpty. Operand 2338 states and 3805 transitions. [2020-10-29 05:37:21,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 993 [2020-10-29 05:37:21,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:37:21,230 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:37:21,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:37:21,230 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:37:21,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:37:21,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1141866025, now seen corresponding path program 1 times [2020-10-29 05:37:21,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:37:21,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324133300] [2020-10-29 05:37:21,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:37:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:37:21,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:37:23,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:37:26,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:37:26,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1012 [2020-10-29 05:37:26,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:37:26,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5187 [2020-10-29 05:37:26,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:37:26,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:37:26,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:37:26,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 05:37:26,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 990 [2020-10-29 05:37:26,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:37:27,890 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:37:27,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:37:27,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:37:27,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:37:27,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:37:27,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:37:27,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:37:27,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 05:37:27,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:37:27,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:37:27,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:37:27,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:37:27,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:37:27,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:37:28,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:37:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:37:28,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:37:28,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:37:28,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 05:37:28,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:37:28,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 05:37:28,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:37:28,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:37:28,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:37:28,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:37:28,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 05:37:28,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:37:29,087 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:37:29,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324133300] [2020-10-29 05:37:29,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:37:29,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:37:29,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976011507] [2020-10-29 05:37:29,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:37:29,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:37:29,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:37:29,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:37:29,103 INFO L87 Difference]: Start difference. First operand 2338 states and 3805 transitions. Second operand 6 states. [2020-10-29 05:37:29,457 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:37:29,831 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 05:37:57,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:37:57,655 INFO L93 Difference]: Finished difference Result 9081 states and 15073 transitions. [2020-10-29 05:37:57,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:37:57,659 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 992 [2020-10-29 05:37:57,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:37:57,702 INFO L225 Difference]: With dead ends: 9081 [2020-10-29 05:37:57,702 INFO L226 Difference]: Without dead ends: 6749 [2020-10-29 05:37:57,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:37:57,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6749 states. [2020-10-29 05:37:57,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6749 to 6624. [2020-10-29 05:37:57,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6624 states. [2020-10-29 05:37:57,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6624 states to 6624 states and 10388 transitions. [2020-10-29 05:37:57,942 INFO L78 Accepts]: Start accepts. Automaton has 6624 states and 10388 transitions. Word has length 992 [2020-10-29 05:37:57,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:37:57,944 INFO L481 AbstractCegarLoop]: Abstraction has 6624 states and 10388 transitions. [2020-10-29 05:37:57,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:37:57,944 INFO L276 IsEmpty]: Start isEmpty. Operand 6624 states and 10388 transitions. [2020-10-29 05:37:57,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1004 [2020-10-29 05:37:57,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:37:57,981 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:37:57,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:37:57,981 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:37:57,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:37:57,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1145893138, now seen corresponding path program 1 times [2020-10-29 05:37:57,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:37:57,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172307664] [2020-10-29 05:37:57,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:37:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:37:58,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:38:00,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:38:03,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:38:03,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1023 [2020-10-29 05:38:03,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:38:03,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5103 [2020-10-29 05:38:03,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:38:03,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:38:03,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 05:38:03,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:38:03,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1014 [2020-10-29 05:38:03,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:38:04,417 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:38:04,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:38:04,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:38:04,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:38:04,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:38:04,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:38:04,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:38:04,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 05:38:04,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:38:04,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:38:04,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:38:04,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:38:04,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:38:04,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:38:04,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:38:04,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:38:04,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:38:04,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:38:04,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:38:04,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 05:38:04,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:38:04,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-29 05:38:04,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:38:04,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:38:04,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:38:04,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:38:04,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 05:38:04,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:38:05,763 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 05:38:05,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172307664] [2020-10-29 05:38:05,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:38:05,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:38:05,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559196228] [2020-10-29 05:38:05,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:38:05,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:38:05,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:38:05,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:38:05,767 INFO L87 Difference]: Start difference. First operand 6624 states and 10388 transitions. Second operand 6 states. [2020-10-29 05:38:06,034 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:38:24,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:38:24,058 INFO L93 Difference]: Finished difference Result 19554 states and 31263 transitions. [2020-10-29 05:38:24,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 05:38:24,064 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1003 [2020-10-29 05:38:24,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:38:24,134 INFO L225 Difference]: With dead ends: 19554 [2020-10-29 05:38:24,134 INFO L226 Difference]: Without dead ends: 12936 [2020-10-29 05:38:24,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:38:24,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12936 states. [2020-10-29 05:38:24,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12936 to 12903. [2020-10-29 05:38:24,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12903 states. [2020-10-29 05:38:24,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12903 states to 12903 states and 18992 transitions. [2020-10-29 05:38:24,573 INFO L78 Accepts]: Start accepts. Automaton has 12903 states and 18992 transitions. Word has length 1003 [2020-10-29 05:38:24,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:38:24,579 INFO L481 AbstractCegarLoop]: Abstraction has 12903 states and 18992 transitions. [2020-10-29 05:38:24,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:38:24,579 INFO L276 IsEmpty]: Start isEmpty. Operand 12903 states and 18992 transitions. [2020-10-29 05:38:24,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1012 [2020-10-29 05:38:24,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:38:24,652 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:38:24,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:38:24,652 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:38:24,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:38:24,654 INFO L82 PathProgramCache]: Analyzing trace with hash 624133854, now seen corresponding path program 1 times [2020-10-29 05:38:24,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:38:24,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689320640] [2020-10-29 05:38:24,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:38:24,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:38:24,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:38:27,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:38:29,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:38:29,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1031 [2020-10-29 05:38:29,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:38:29,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5155 [2020-10-29 05:38:29,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:38:29,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:38:29,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:38:29,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-29 05:38:29,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 990 [2020-10-29 05:38:29,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:38:30,826 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:38:30,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:38:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:38:30,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:38:30,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:38:30,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:38:30,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:38:30,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:38:30,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:38:30,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:38:30,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:38:30,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:38:30,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:38:30,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:38:30,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:38:30,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:38:30,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:38:31,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:38:31,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 05:38:31,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:38:31,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 05:38:31,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:38:31,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:38:31,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:38:31,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:38:31,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 05:38:31,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:38:32,053 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:38:32,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689320640] [2020-10-29 05:38:32,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:38:32,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:38:32,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093484460] [2020-10-29 05:38:32,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:38:32,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:38:32,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:38:32,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:38:32,057 INFO L87 Difference]: Start difference. First operand 12903 states and 18992 transitions. Second operand 5 states. [2020-10-29 05:38:32,555 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:38:52,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:38:52,223 INFO L93 Difference]: Finished difference Result 32109 states and 49140 transitions. [2020-10-29 05:38:52,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:38:52,224 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1011 [2020-10-29 05:38:52,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:38:52,309 INFO L225 Difference]: With dead ends: 32109 [2020-10-29 05:38:52,309 INFO L226 Difference]: Without dead ends: 19212 [2020-10-29 05:38:52,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:38:52,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19212 states. [2020-10-29 05:38:52,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19212 to 19115. [2020-10-29 05:38:52,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19115 states. [2020-10-29 05:38:52,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19115 states to 19115 states and 27780 transitions. [2020-10-29 05:38:52,927 INFO L78 Accepts]: Start accepts. Automaton has 19115 states and 27780 transitions. Word has length 1011 [2020-10-29 05:38:52,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:38:52,929 INFO L481 AbstractCegarLoop]: Abstraction has 19115 states and 27780 transitions. [2020-10-29 05:38:52,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:38:52,929 INFO L276 IsEmpty]: Start isEmpty. Operand 19115 states and 27780 transitions. [2020-10-29 05:38:53,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1030 [2020-10-29 05:38:53,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:38:53,002 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:38:53,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:38:53,002 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:38:53,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:38:53,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1104662923, now seen corresponding path program 1 times [2020-10-29 05:38:53,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:38:53,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453857107] [2020-10-29 05:38:53,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:38:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:38:53,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:38:54,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:38:57,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:38:58,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:38:58,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1049 [2020-10-29 05:38:58,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:38:58,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-29 05:38:58,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:38:58,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:38:58,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 05:38:58,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:38:58,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1040 [2020-10-29 05:38:58,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:38:59,439 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:38:59,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:38:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:38:59,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:38:59,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:38:59,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:38:59,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:38:59,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 05:38:59,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:38:59,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:38:59,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:38:59,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:38:59,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:38:59,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:38:59,584 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:38:59,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:38:59,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:38:59,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:38:59,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:38:59,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:38:59,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 05:38:59,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:38:59,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-29 05:38:59,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:38:59,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:38:59,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:38:59,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:38:59,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 05:38:59,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:39:00,745 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 05:39:00,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453857107] [2020-10-29 05:39:00,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:39:00,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:39:00,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192889415] [2020-10-29 05:39:00,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:39:00,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:39:00,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:39:00,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:39:00,749 INFO L87 Difference]: Start difference. First operand 19115 states and 27780 transitions. Second operand 6 states. [2020-10-29 05:39:01,020 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:39:18,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:39:18,763 INFO L93 Difference]: Finished difference Result 57594 states and 89490 transitions. [2020-10-29 05:39:18,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:39:18,764 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1029 [2020-10-29 05:39:18,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:39:18,953 INFO L225 Difference]: With dead ends: 57594 [2020-10-29 05:39:18,953 INFO L226 Difference]: Without dead ends: 38485 [2020-10-29 05:39:19,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:39:19,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38485 states. [2020-10-29 05:39:20,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38485 to 38401. [2020-10-29 05:39:20,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38401 states. [2020-10-29 05:39:20,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38401 states to 38401 states and 56021 transitions. [2020-10-29 05:39:20,215 INFO L78 Accepts]: Start accepts. Automaton has 38401 states and 56021 transitions. Word has length 1029 [2020-10-29 05:39:20,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:39:20,216 INFO L481 AbstractCegarLoop]: Abstraction has 38401 states and 56021 transitions. [2020-10-29 05:39:20,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:39:20,216 INFO L276 IsEmpty]: Start isEmpty. Operand 38401 states and 56021 transitions. [2020-10-29 05:39:20,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1043 [2020-10-29 05:39:20,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:39:20,358 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:39:20,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 05:39:20,358 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:39:20,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:39:20,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1761451363, now seen corresponding path program 1 times [2020-10-29 05:39:20,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:39:20,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211423254] [2020-10-29 05:39:20,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:39:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:39:20,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:20,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:20,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:25,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:39:25,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1064 [2020-10-29 05:39:25,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:39:25,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5172 [2020-10-29 05:39:25,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:39:25,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:39:25,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:39:25,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 05:39:25,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 05:39:25,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:39:26,099 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:39:26,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:39:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:39:26,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:26,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:39:26,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:39:26,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:39:26,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:39:26,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:39:26,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:39:26,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:39:26,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:39:26,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:39:26,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:39:26,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:39:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:39:26,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:26,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:39:26,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 05:39:26,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:39:26,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 05:39:26,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:39:26,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:39:26,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:39:26,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:39:26,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 05:39:26,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:39:26,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 05:39:26,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:39:26,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:26,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:26,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:39:26,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 05:39:26,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:39:26,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-29 05:39:26,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:39:26,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:39:26,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:39:26,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:39:26,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 05:39:26,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:39:27,335 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 60 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 05:39:27,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211423254] [2020-10-29 05:39:27,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:39:27,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:39:27,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398954551] [2020-10-29 05:39:27,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:39:27,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:39:27,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:39:27,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:39:27,340 INFO L87 Difference]: Start difference. First operand 38401 states and 56021 transitions. Second operand 7 states. [2020-10-29 05:39:27,638 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:39:29,041 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 05:39:49,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:39:49,468 INFO L93 Difference]: Finished difference Result 116175 states and 182897 transitions. [2020-10-29 05:39:49,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 05:39:49,469 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1042 [2020-10-29 05:39:49,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:39:49,892 INFO L225 Difference]: With dead ends: 116175 [2020-10-29 05:39:49,892 INFO L226 Difference]: Without dead ends: 77780 [2020-10-29 05:39:49,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 05:39:50,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77780 states. [2020-10-29 05:39:51,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77780 to 77628. [2020-10-29 05:39:51,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77628 states. [2020-10-29 05:39:52,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77628 states to 77628 states and 118482 transitions. [2020-10-29 05:39:52,587 INFO L78 Accepts]: Start accepts. Automaton has 77628 states and 118482 transitions. Word has length 1042 [2020-10-29 05:39:52,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:39:52,587 INFO L481 AbstractCegarLoop]: Abstraction has 77628 states and 118482 transitions. [2020-10-29 05:39:52,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:39:52,587 INFO L276 IsEmpty]: Start isEmpty. Operand 77628 states and 118482 transitions. [2020-10-29 05:39:53,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1062 [2020-10-29 05:39:53,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:39:53,237 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:39:53,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 05:39:53,238 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:39:53,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:39:53,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1150125911, now seen corresponding path program 1 times [2020-10-29 05:39:53,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:39:53,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361165665] [2020-10-29 05:39:53,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:39:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:39:53,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:53,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:54,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:55,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:58,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:39:58,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1085 [2020-10-29 05:39:58,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:39:58,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 05:39:58,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:39:58,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:39:58,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:39:58,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-29 05:39:58,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 05:39:58,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:39:59,109 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:39:59,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:39:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:39:59,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:59,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:39:59,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:39:59,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:39:59,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:39:59,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:39:59,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:39:59,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:39:59,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:39:59,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:39:59,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:39:59,245 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:39:59,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:39:59,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:39:59,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:59,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:39:59,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 05:39:59,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:39:59,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 05:39:59,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:39:59,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:39:59,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:39:59,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:39:59,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:39:59,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:39:59,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 05:39:59,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:39:59,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:59,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:39:59,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:39:59,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:39:59,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:39:59,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:39:59,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:39:59,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:39:59,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:39:59,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 05:39:59,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:39:59,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 05:39:59,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:39:59,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:59,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:39:59,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 05:39:59,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:39:59,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-29 05:39:59,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:39:59,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:39:59,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:39:59,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:39:59,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 05:39:59,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:40:00,271 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 05:40:00,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361165665] [2020-10-29 05:40:00,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:40:00,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:40:00,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968896183] [2020-10-29 05:40:00,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:40:00,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:40:00,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:40:00,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:40:00,275 INFO L87 Difference]: Start difference. First operand 77628 states and 118482 transitions. Second operand 8 states. [2020-10-29 05:40:00,559 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:40:01,255 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:40:01,540 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 159