/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/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:02:17,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:02:17,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:02:17,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:02:17,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:02:17,194 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:02:17,197 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:02:17,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:02:17,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:02:17,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:02:17,214 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:02:17,216 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:02:17,216 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:02:17,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:02:17,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:02:17,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:02:17,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:02:17,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:02:17,239 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:02:17,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:02:17,250 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:02:17,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:02:17,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:02:17,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:02:17,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:02:17,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:02:17,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:02:17,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:02:17,278 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:02:17,279 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:02:17,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:02:17,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:02:17,283 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:02:17,284 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:02:17,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:02:17,285 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:02:17,286 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:02:17,286 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:02:17,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:02:17,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:02:17,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:02:17,293 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 13:02:17,355 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:02:17,356 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:02:17,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:02:17,361 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:02:17,361 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:02:17,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:02:17,362 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:02:17,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:02:17,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:02:17,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:02:17,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:02:17,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:02:17,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:02:17,365 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:02:17,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:02:17,366 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:02:17,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:02:17,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:02:17,367 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:02:17,367 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:02:17,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:02:17,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:02:17,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:02:17,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:02:17,369 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:02:17,369 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:02:17,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:02:17,369 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:02:17,370 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:02:17,370 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:02:17,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:02:17,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:02:17,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:02:17,897 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:02:17,898 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:02:17,899 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-29 13:02:17,987 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41e80127c/910a5c0e83274f76868b20fbc9abc305/FLAGab7229db1 [2020-10-29 13:02:18,746 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:02:18,747 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-29 13:02:18,788 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41e80127c/910a5c0e83274f76868b20fbc9abc305/FLAGab7229db1 [2020-10-29 13:02:18,984 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41e80127c/910a5c0e83274f76868b20fbc9abc305 [2020-10-29 13:02:18,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:02:18,995 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:02:18,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:02:18,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:02:19,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:02:19,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:02:18" (1/1) ... [2020-10-29 13:02:19,008 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@578fd111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:02:19, skipping insertion in model container [2020-10-29 13:02:19,008 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:02:18" (1/1) ... [2020-10-29 13:02:19,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:02:19,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:02:20,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:02:20,041 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:02:20,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:02:20,521 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:02:20,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:02:20 WrapperNode [2020-10-29 13:02:20,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:02:20,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:02:20,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:02:20,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:02:20,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:02:20" (1/1) ... [2020-10-29 13:02:20,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:02:20" (1/1) ... [2020-10-29 13:02:20,566 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:02:20" (1/1) ... [2020-10-29 13:02:20,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:02:20" (1/1) ... [2020-10-29 13:02:20,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:02:20" (1/1) ... [2020-10-29 13:02:20,651 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:02:20" (1/1) ... [2020-10-29 13:02:20,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:02:20" (1/1) ... [2020-10-29 13:02:20,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:02:20,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:02:20,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:02:20,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:02:20,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:02:20" (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 13:02:20,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:02:20,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:02:20,774 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:02:20,774 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:02:20,774 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:02:20,774 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:02:20,774 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:02:20,774 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:02:20,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:02:20,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:02:20,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:02:20,775 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:02:20,775 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:02:20,775 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:02:20,776 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:02:20,776 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:02:20,776 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:02:20,776 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:02:20,776 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:02:20,776 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:02:20,777 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:02:20,777 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:02:20,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:02:20,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:02:20,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:02:20,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:02:20,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:02:20,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:02:23,127 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:02:23,127 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:02:23,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:02:23 BoogieIcfgContainer [2020-10-29 13:02:23,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:02:23,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:02:23,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:02:23,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:02:23,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:02:18" (1/3) ... [2020-10-29 13:02:23,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c34f16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:02:23, skipping insertion in model container [2020-10-29 13:02:23,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:02:20" (2/3) ... [2020-10-29 13:02:23,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c34f16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:02:23, skipping insertion in model container [2020-10-29 13:02:23,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:02:23" (3/3) ... [2020-10-29 13:02:23,139 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-29 13:02:23,151 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:02:23,174 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:02:23,187 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:02:23,219 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:02:23,220 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:02:23,220 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:02:23,220 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:02:23,220 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:02:23,220 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:02:23,220 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:02:23,220 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:02:23,253 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states. [2020-10-29 13:02:23,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-29 13:02:23,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:02:23,280 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] [2020-10-29 13:02:23,280 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:02:23,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:02:23,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1502571194, now seen corresponding path program 1 times [2020-10-29 13:02:23,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:02:23,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957880817] [2020-10-29 13:02:23,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:02:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:02:24,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:25,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:25,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:26,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:26,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:26,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:26,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:26,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:27,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:27,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:27,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:29,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:02:29,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-29 13:02:29,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 13:02:29,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 13:02:29,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:02:29,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:02:29,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:02:29,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:02:29,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-29 13:02:29,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 13:02:30,154 WARN L193 SmtUtils]: Spent 545.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-29 13:02:30,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:02:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:02:30,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:30,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:02:30,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:02:30,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:02:30,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 13:02:30,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:02:30,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:02:30,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:02:30,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:02:30,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:02:30,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:02:30,403 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 13:02:30,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957880817] [2020-10-29 13:02:30,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:02:30,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:02:30,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354049116] [2020-10-29 13:02:30,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:02:30,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:02:30,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:02:30,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:02:30,441 INFO L87 Difference]: Start difference. First operand 590 states. Second operand 5 states. [2020-10-29 13:02:37,211 WARN L193 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-29 13:02:39,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:02:39,008 INFO L93 Difference]: Finished difference Result 1685 states and 3001 transitions. [2020-10-29 13:02:39,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:02:39,010 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 239 [2020-10-29 13:02:39,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:02:39,043 INFO L225 Difference]: With dead ends: 1685 [2020-10-29 13:02:39,043 INFO L226 Difference]: Without dead ends: 1138 [2020-10-29 13:02:39,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:02:39,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2020-10-29 13:02:39,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1135. [2020-10-29 13:02:39,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1135 states. [2020-10-29 13:02:39,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 1772 transitions. [2020-10-29 13:02:39,269 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 1772 transitions. Word has length 239 [2020-10-29 13:02:39,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:02:39,270 INFO L481 AbstractCegarLoop]: Abstraction has 1135 states and 1772 transitions. [2020-10-29 13:02:39,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:02:39,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 1772 transitions. [2020-10-29 13:02:39,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-29 13:02:39,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:02:39,290 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] [2020-10-29 13:02:39,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:02:39,291 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:02:39,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:02:39,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1070969745, now seen corresponding path program 1 times [2020-10-29 13:02:39,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:02:39,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16382981] [2020-10-29 13:02:39,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:02:39,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:02:39,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:39,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:39,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:40,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:40,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:40,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:40,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:40,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:41,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:41,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:41,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:43,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:43,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:44,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:44,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:02:44,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-29 13:02:44,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 13:02:44,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 13:02:44,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:02:44,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:02:44,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:02:44,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 13:02:44,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 13:02:44,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:02:45,230 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-29 13:02:45,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:02:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:02:45,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:45,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:02:45,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:02:45,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:02:45,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 13:02:45,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:02:45,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:02:45,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:02:45,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:02:45,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:02:45,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:02:45,464 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 13:02:45,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16382981] [2020-10-29 13:02:45,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:02:45,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:02:45,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145540936] [2020-10-29 13:02:45,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:02:45,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:02:45,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:02:45,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:02:45,482 INFO L87 Difference]: Start difference. First operand 1135 states and 1772 transitions. Second operand 4 states. [2020-10-29 13:02:51,567 WARN L193 SmtUtils]: Spent 658.00 ms on a formula simplification that was a NOOP. DAG size: 300 [2020-10-29 13:02:53,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:02:53,292 INFO L93 Difference]: Finished difference Result 3232 states and 5017 transitions. [2020-10-29 13:02:53,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:02:53,294 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 241 [2020-10-29 13:02:53,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:02:53,309 INFO L225 Difference]: With dead ends: 3232 [2020-10-29 13:02:53,309 INFO L226 Difference]: Without dead ends: 2226 [2020-10-29 13:02:53,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:02:53,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2226 states. [2020-10-29 13:02:53,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2226 to 2223. [2020-10-29 13:02:53,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2223 states. [2020-10-29 13:02:53,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2223 states to 2223 states and 3455 transitions. [2020-10-29 13:02:53,469 INFO L78 Accepts]: Start accepts. Automaton has 2223 states and 3455 transitions. Word has length 241 [2020-10-29 13:02:53,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:02:53,472 INFO L481 AbstractCegarLoop]: Abstraction has 2223 states and 3455 transitions. [2020-10-29 13:02:53,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:02:53,472 INFO L276 IsEmpty]: Start isEmpty. Operand 2223 states and 3455 transitions. [2020-10-29 13:02:53,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-29 13:02:53,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:02:53,480 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] [2020-10-29 13:02:53,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:02:53,483 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:02:53,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:02:53,484 INFO L82 PathProgramCache]: Analyzing trace with hash 50460396, now seen corresponding path program 1 times [2020-10-29 13:02:53,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:02:53,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366408222] [2020-10-29 13:02:53,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:02:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:02:53,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:53,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:53,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:53,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:54,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:54,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:54,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:54,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:54,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:55,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:58,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:58,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:02:58,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-29 13:02:58,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 13:02:58,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-29 13:02:58,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:02:58,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:02:58,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:02:58,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:02:58,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 13:02:58,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:02:59,349 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-29 13:02:59,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:02:59,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:02:59,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:59,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:02:59,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:02:59,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:02:59,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 13:02:59,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:02:59,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:02:59,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:02:59,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:02:59,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:02:59,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 13:02:59,677 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 13:02:59,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366408222] [2020-10-29 13:02:59,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:02:59,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:02:59,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812322778] [2020-10-29 13:02:59,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:02:59,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:02:59,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:02:59,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:02:59,684 INFO L87 Difference]: Start difference. First operand 2223 states and 3455 transitions. Second operand 5 states. [2020-10-29 13:03:04,946 WARN L193 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-29 13:03:06,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:03:06,638 INFO L93 Difference]: Finished difference Result 6409 states and 9907 transitions. [2020-10-29 13:03:06,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:03:06,644 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 241 [2020-10-29 13:03:06,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:03:06,666 INFO L225 Difference]: With dead ends: 6409 [2020-10-29 13:03:06,666 INFO L226 Difference]: Without dead ends: 4310 [2020-10-29 13:03:06,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:03:06,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4310 states. [2020-10-29 13:03:06,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4310 to 4307. [2020-10-29 13:03:06,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4307 states. [2020-10-29 13:03:06,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4307 states to 4307 states and 6625 transitions. [2020-10-29 13:03:06,926 INFO L78 Accepts]: Start accepts. Automaton has 4307 states and 6625 transitions. Word has length 241 [2020-10-29 13:03:06,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:03:06,928 INFO L481 AbstractCegarLoop]: Abstraction has 4307 states and 6625 transitions. [2020-10-29 13:03:06,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:03:06,928 INFO L276 IsEmpty]: Start isEmpty. Operand 4307 states and 6625 transitions. [2020-10-29 13:03:06,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-29 13:03:06,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:03:06,941 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] [2020-10-29 13:03:06,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:03:06,941 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:03:06,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:03:06,942 INFO L82 PathProgramCache]: Analyzing trace with hash 501955675, now seen corresponding path program 1 times [2020-10-29 13:03:06,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:03:06,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518259591] [2020-10-29 13:03:06,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:03:06,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:03:07,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:07,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:07,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:07,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:07,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:07,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:07,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:07,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:08,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:08,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:09,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:09,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:09,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:12,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:03:12,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-29 13:03:12,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:03:12,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 13:03:12,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:03:12,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:03:12,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:03:12,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:03:12,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-29 13:03:12,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:03:12,782 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-29 13:03:12,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:03:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:03:12,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:12,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:03:12,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:03:12,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:03:12,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 13:03:12,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:03:12,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:03:12,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:03:12,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:03:12,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:03:12,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:03:12,962 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 13:03:12,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518259591] [2020-10-29 13:03:12,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:03:12,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:03:12,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63793441] [2020-10-29 13:03:12,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:03:12,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:03:12,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:03:12,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:03:12,966 INFO L87 Difference]: Start difference. First operand 4307 states and 6625 transitions. Second operand 5 states. [2020-10-29 13:03:18,552 WARN L193 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-29 13:03:20,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:03:20,463 INFO L93 Difference]: Finished difference Result 12575 states and 19273 transitions. [2020-10-29 13:03:20,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:03:20,464 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 243 [2020-10-29 13:03:20,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:03:20,510 INFO L225 Difference]: With dead ends: 12575 [2020-10-29 13:03:20,510 INFO L226 Difference]: Without dead ends: 8416 [2020-10-29 13:03:20,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:03:20,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8416 states. [2020-10-29 13:03:21,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8416 to 8413. [2020-10-29 13:03:21,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8413 states. [2020-10-29 13:03:21,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8413 states to 8413 states and 12817 transitions. [2020-10-29 13:03:21,077 INFO L78 Accepts]: Start accepts. Automaton has 8413 states and 12817 transitions. Word has length 243 [2020-10-29 13:03:21,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:03:21,077 INFO L481 AbstractCegarLoop]: Abstraction has 8413 states and 12817 transitions. [2020-10-29 13:03:21,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:03:21,078 INFO L276 IsEmpty]: Start isEmpty. Operand 8413 states and 12817 transitions. [2020-10-29 13:03:21,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-29 13:03:21,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:03:21,099 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] [2020-10-29 13:03:21,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:03:21,100 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:03:21,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:03:21,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1270650062, now seen corresponding path program 1 times [2020-10-29 13:03:21,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:03:21,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133320993] [2020-10-29 13:03:21,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:03:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:03:21,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:21,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:21,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:21,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:21,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:21,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:21,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:21,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:21,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:22,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:22,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:22,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:22,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:26,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:03:26,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-29 13:03:26,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:03:26,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-29 13:03:26,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:03:26,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:03:26,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:03:26,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 13:03:26,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 13:03:26,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:03:26,980 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-29 13:03:26,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:03:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:03:26,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:27,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:03:27,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:03:27,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:03:27,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 13:03:27,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:03:27,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:03:27,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:03:27,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:03:27,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:03:27,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:03:27,143 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 13:03:27,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133320993] [2020-10-29 13:03:27,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:03:27,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:03:27,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391782278] [2020-10-29 13:03:27,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:03:27,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:03:27,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:03:27,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:03:27,146 INFO L87 Difference]: Start difference. First operand 8413 states and 12817 transitions. Second operand 4 states. [2020-10-29 13:03:33,345 WARN L193 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 300 [2020-10-29 13:03:35,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:03:35,134 INFO L93 Difference]: Finished difference Result 23787 states and 35967 transitions. [2020-10-29 13:03:35,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:03:35,135 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 245 [2020-10-29 13:03:35,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:03:35,195 INFO L225 Difference]: With dead ends: 23787 [2020-10-29 13:03:35,195 INFO L226 Difference]: Without dead ends: 16224 [2020-10-29 13:03:35,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:03:35,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16224 states. [2020-10-29 13:03:36,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16224 to 16221. [2020-10-29 13:03:36,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16221 states. [2020-10-29 13:03:36,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16221 states to 16221 states and 24469 transitions. [2020-10-29 13:03:36,165 INFO L78 Accepts]: Start accepts. Automaton has 16221 states and 24469 transitions. Word has length 245 [2020-10-29 13:03:36,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:03:36,166 INFO L481 AbstractCegarLoop]: Abstraction has 16221 states and 24469 transitions. [2020-10-29 13:03:36,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:03:36,166 INFO L276 IsEmpty]: Start isEmpty. Operand 16221 states and 24469 transitions. [2020-10-29 13:03:36,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-29 13:03:36,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:03:36,202 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] [2020-10-29 13:03:36,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:03:36,202 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:03:36,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:03:36,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1453851497, now seen corresponding path program 1 times [2020-10-29 13:03:36,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:03:36,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829862629] [2020-10-29 13:03:36,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:03:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:03:36,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:36,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:36,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:36,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:36,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:36,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:36,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:36,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:36,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:36,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:38,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:39,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:39,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:41,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:03:41,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-29 13:03:41,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:03:41,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 13:03:41,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:03:41,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:03:41,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:03:41,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:03:41,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 13:03:41,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:03:42,106 WARN L193 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-29 13:03:42,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:03:42,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:03:42,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:42,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:03:42,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:03:42,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:03:42,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 13:03:42,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:03:42,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:03:42,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:03:42,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:03:42,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:03:42,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:03:42,282 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 13:03:42,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829862629] [2020-10-29 13:03:42,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:03:42,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:03:42,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892619279] [2020-10-29 13:03:42,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:03:42,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:03:42,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:03:42,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:03:42,285 INFO L87 Difference]: Start difference. First operand 16221 states and 24469 transitions. Second operand 5 states. [2020-10-29 13:03:48,265 WARN L193 SmtUtils]: Spent 820.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-29 13:03:50,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:03:50,317 INFO L93 Difference]: Finished difference Result 47207 states and 70953 transitions. [2020-10-29 13:03:50,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:03:50,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 245 [2020-10-29 13:03:50,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:03:50,393 INFO L225 Difference]: With dead ends: 47207 [2020-10-29 13:03:50,393 INFO L226 Difference]: Without dead ends: 31228 [2020-10-29 13:03:50,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:03:50,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31228 states. [2020-10-29 13:03:52,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31228 to 31225. [2020-10-29 13:03:52,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31225 states. [2020-10-29 13:03:52,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31225 states to 31225 states and 46623 transitions. [2020-10-29 13:03:52,104 INFO L78 Accepts]: Start accepts. Automaton has 31225 states and 46623 transitions. Word has length 245 [2020-10-29 13:03:52,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:03:52,105 INFO L481 AbstractCegarLoop]: Abstraction has 31225 states and 46623 transitions. [2020-10-29 13:03:52,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:03:52,105 INFO L276 IsEmpty]: Start isEmpty. Operand 31225 states and 46623 transitions. [2020-10-29 13:03:52,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-29 13:03:52,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:03:52,158 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] [2020-10-29 13:03:52,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:03:52,158 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:03:52,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:03:52,159 INFO L82 PathProgramCache]: Analyzing trace with hash -307302966, now seen corresponding path program 1 times [2020-10-29 13:03:52,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:03:52,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534173555] [2020-10-29 13:03:52,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:03:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:03:52,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:52,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:52,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:52,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:52,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:52,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:52,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:52,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:52,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:52,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:53,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:55,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:56,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:56,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:56,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:57,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:03:57,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-29 13:03:57,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 13:03:57,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-29 13:03:57,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:03:57,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:03:57,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:03:57,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:03:57,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 13:03:57,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:03:58,035 WARN L193 SmtUtils]: Spent 632.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-29 13:03:58,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:03:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:03:58,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:58,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:03:58,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:03:58,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:03:58,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 13:03:58,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:03:58,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:03:58,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:03:58,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:03:58,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:03:58,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:03:58,176 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 13:03:58,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534173555] [2020-10-29 13:03:58,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:03:58,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:03:58,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576916822] [2020-10-29 13:03:58,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:03:58,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:03:58,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:03:58,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:03:58,179 INFO L87 Difference]: Start difference. First operand 31225 states and 46623 transitions. Second operand 5 states. [2020-10-29 13:04:05,394 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-29 13:04:07,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:04:07,766 INFO L93 Difference]: Finished difference Result 64827 states and 96115 transitions. [2020-10-29 13:04:07,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:04:07,768 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 247 [2020-10-29 13:04:07,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:04:07,826 INFO L225 Difference]: With dead ends: 64827 [2020-10-29 13:04:07,826 INFO L226 Difference]: Without dead ends: 36788 [2020-10-29 13:04:07,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:04:07,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36788 states. [2020-10-29 13:04:09,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36788 to 31189. [2020-10-29 13:04:09,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31189 states. [2020-10-29 13:04:09,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31189 states to 31189 states and 46555 transitions. [2020-10-29 13:04:09,749 INFO L78 Accepts]: Start accepts. Automaton has 31189 states and 46555 transitions. Word has length 247 [2020-10-29 13:04:09,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:04:09,749 INFO L481 AbstractCegarLoop]: Abstraction has 31189 states and 46555 transitions. [2020-10-29 13:04:09,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:04:09,750 INFO L276 IsEmpty]: Start isEmpty. Operand 31189 states and 46555 transitions. [2020-10-29 13:04:09,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-29 13:04:09,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:04:09,790 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] [2020-10-29 13:04:09,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:04:09,790 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:04:09,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:04:09,791 INFO L82 PathProgramCache]: Analyzing trace with hash -173867855, now seen corresponding path program 1 times [2020-10-29 13:04:09,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:04:09,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962814698] [2020-10-29 13:04:09,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:04:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:04:09,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:09,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:09,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:09,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:10,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:10,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:10,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:10,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:10,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:10,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:10,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:10,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:14,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:04:14,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-29 13:04:14,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:04:14,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 13:04:14,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:04:14,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:04:14,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:04:14,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:04:14,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 13:04:14,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:04:15,667 WARN L193 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-29 13:04:15,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:04:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:04:15,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:15,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:04:15,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:04:15,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:04:15,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 13:04:15,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:04:15,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:04:15,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:04:15,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:04:15,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:04:15,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:04:15,782 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 13:04:15,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962814698] [2020-10-29 13:04:15,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:04:15,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:04:15,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487383576] [2020-10-29 13:04:15,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:04:15,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:04:15,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:04:15,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:04:15,785 INFO L87 Difference]: Start difference. First operand 31189 states and 46555 transitions. Second operand 5 states. [2020-10-29 13:04:23,939 WARN L193 SmtUtils]: Spent 673.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-29 13:04:26,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:04:26,823 INFO L93 Difference]: Finished difference Result 91813 states and 136776 transitions. [2020-10-29 13:04:26,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:04:26,824 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 249 [2020-10-29 13:04:26,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:04:26,912 INFO L225 Difference]: With dead ends: 91813 [2020-10-29 13:04:26,913 INFO L226 Difference]: Without dead ends: 60942 [2020-10-29 13:04:26,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:04:27,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60942 states. [2020-10-29 13:04:31,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60942 to 60939. [2020-10-29 13:04:31,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60939 states. [2020-10-29 13:04:31,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60939 states to 60939 states and 90210 transitions. [2020-10-29 13:04:31,566 INFO L78 Accepts]: Start accepts. Automaton has 60939 states and 90210 transitions. Word has length 249 [2020-10-29 13:04:31,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:04:31,567 INFO L481 AbstractCegarLoop]: Abstraction has 60939 states and 90210 transitions. [2020-10-29 13:04:31,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:04:31,567 INFO L276 IsEmpty]: Start isEmpty. Operand 60939 states and 90210 transitions. [2020-10-29 13:04:31,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-29 13:04:31,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:04:31,624 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] [2020-10-29 13:04:31,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:04:31,625 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:04:31,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:04:31,626 INFO L82 PathProgramCache]: Analyzing trace with hash 890868998, now seen corresponding path program 1 times [2020-10-29 13:04:31,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:04:31,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019602197] [2020-10-29 13:04:31,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:04:31,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:04:31,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:31,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:31,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:32,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:32,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:32,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:32,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:32,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:32,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:32,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:32,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:32,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:36,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:04:36,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-29 13:04:36,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:04:36,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-29 13:04:36,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:04:36,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:04:36,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:04:36,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-29 13:04:36,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 13:04:36,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:04:37,525 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-29 13:04:37,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:04:37,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:04:37,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:37,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:04:37,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:04:37,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:04:37,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 13:04:37,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:04:37,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:04:37,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:04:37,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:04:37,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:04:37,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:04:37,623 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 13:04:37,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019602197] [2020-10-29 13:04:37,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:04:37,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:04:37,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609261451] [2020-10-29 13:04:37,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:04:37,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:04:37,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:04:37,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:04:37,625 INFO L87 Difference]: Start difference. First operand 60939 states and 90210 transitions. Second operand 5 states. [2020-10-29 13:04:50,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:04:50,594 INFO L93 Difference]: Finished difference Result 165243 states and 242435 transitions. [2020-10-29 13:04:50,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:04:50,595 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 251 [2020-10-29 13:04:50,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:04:50,760 INFO L225 Difference]: With dead ends: 165243 [2020-10-29 13:04:50,760 INFO L226 Difference]: Without dead ends: 110728 [2020-10-29 13:04:51,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:04:51,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110728 states. [2020-10-29 13:04:56,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110728 to 63559. [2020-10-29 13:04:56,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63559 states. [2020-10-29 13:04:56,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63559 states to 63559 states and 94288 transitions. [2020-10-29 13:04:56,428 INFO L78 Accepts]: Start accepts. Automaton has 63559 states and 94288 transitions. Word has length 251 [2020-10-29 13:04:56,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:04:56,428 INFO L481 AbstractCegarLoop]: Abstraction has 63559 states and 94288 transitions. [2020-10-29 13:04:56,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:04:56,428 INFO L276 IsEmpty]: Start isEmpty. Operand 63559 states and 94288 transitions. [2020-10-29 13:04:56,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-29 13:04:56,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:04:56,497 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:04:56,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:04:56,497 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:04:56,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:04:56,498 INFO L82 PathProgramCache]: Analyzing trace with hash -313009653, now seen corresponding path program 1 times [2020-10-29 13:04:56,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:04:56,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447285412] [2020-10-29 13:04:56,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:04:56,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:04:56,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:56,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:56,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:56,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:56,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:57,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:57,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:57,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:57,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:57,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:57,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:57,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:57,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:00,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:01,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:05:01,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-29 13:05:01,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 13:05:01,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 13:05:01,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:05:01,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:05:01,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:05:01,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 13:05:01,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 13:05:01,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:05:02,404 WARN L193 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-29 13:05:02,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:05:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:05:02,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:02,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:05:02,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:05:02,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:05:02,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:05:02,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:05:02,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:05:02,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:05:02,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:05:02,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:05:02,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:05:02,496 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 13:05:02,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447285412] [2020-10-29 13:05:02,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:05:02,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:05:02,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012482323] [2020-10-29 13:05:02,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:05:02,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:05:02,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:05:02,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:05:02,499 INFO L87 Difference]: Start difference. First operand 63559 states and 94288 transitions. Second operand 5 states. [2020-10-29 13:05:15,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:05:15,559 INFO L93 Difference]: Finished difference Result 181819 states and 267995 transitions. [2020-10-29 13:05:15,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:05:15,560 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 253 [2020-10-29 13:05:15,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:05:15,735 INFO L225 Difference]: With dead ends: 181819 [2020-10-29 13:05:15,735 INFO L226 Difference]: Without dead ends: 125784 [2020-10-29 13:05:15,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:05:15,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125784 states. [2020-10-29 13:05:22,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125784 to 72471. [2020-10-29 13:05:22,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72471 states. [2020-10-29 13:05:22,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72471 states to 72471 states and 108272 transitions. [2020-10-29 13:05:22,332 INFO L78 Accepts]: Start accepts. Automaton has 72471 states and 108272 transitions. Word has length 253 [2020-10-29 13:05:22,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:05:22,332 INFO L481 AbstractCegarLoop]: Abstraction has 72471 states and 108272 transitions. [2020-10-29 13:05:22,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:05:22,333 INFO L276 IsEmpty]: Start isEmpty. Operand 72471 states and 108272 transitions. [2020-10-29 13:05:22,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-29 13:05:22,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:05:22,398 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] [2020-10-29 13:05:22,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:05:22,398 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:05:22,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:05:22,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1286661550, now seen corresponding path program 1 times [2020-10-29 13:05:22,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:05:22,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824920200] [2020-10-29 13:05:22,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:05:22,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:05:22,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:22,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:22,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:22,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:22,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:22,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:22,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:22,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:23,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:23,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:23,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:23,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:23,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:27,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:05:27,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-29 13:05:27,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:05:27,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 13:05:27,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:05:27,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:05:27,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:05:27,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:05:27,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 13:05:27,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:05:28,281 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-29 13:05:28,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:05:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:05:28,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:28,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:05:28,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:05:28,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:05:28,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 13:05:28,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:05:28,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:05:28,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:05:28,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:05:28,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:05:28,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:05:28,412 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 13:05:28,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824920200] [2020-10-29 13:05:28,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:05:28,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:05:28,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701146860] [2020-10-29 13:05:28,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:05:28,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:05:28,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:05:28,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:05:28,414 INFO L87 Difference]: Start difference. First operand 72471 states and 108272 transitions. Second operand 5 states. [2020-10-29 13:05:43,043 WARN L193 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-29 13:05:48,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:05:48,261 INFO L93 Difference]: Finished difference Result 207799 states and 309042 transitions. [2020-10-29 13:05:48,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:05:48,262 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 254 [2020-10-29 13:05:48,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:05:48,481 INFO L225 Difference]: With dead ends: 207799 [2020-10-29 13:05:48,482 INFO L226 Difference]: Without dead ends: 138580 [2020-10-29 13:05:48,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:05:48,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138580 states.