/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.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:06:55,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:06:55,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:06:55,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:06:55,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:06:55,194 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:06:55,196 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:06:55,201 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:06:55,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:06:55,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:06:55,214 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:06:55,215 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:06:55,216 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:06:55,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:06:55,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:06:55,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:06:55,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:06:55,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:06:55,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:06:55,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:06:55,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:06:55,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:06:55,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:06:55,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:06:55,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:06:55,262 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:06:55,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:06:55,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:06:55,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:06:55,269 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:06:55,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:06:55,273 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:06:55,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:06:55,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:06:55,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:06:55,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:06:55,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:06:55,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:06:55,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:06:55,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:06:55,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:06:55,296 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 13:06:55,350 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:06:55,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:06:55,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:06:55,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:06:55,355 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:06:55,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:06:55,356 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:06:55,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:06:55,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:06:55,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:06:55,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:06:55,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:06:55,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:06:55,358 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:06:55,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:06:55,359 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:06:55,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:06:55,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:06:55,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:06:55,360 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:06:55,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:06:55,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:06:55,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:06:55,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:06:55,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:06:55,361 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:06:55,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:06:55,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:06:55,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:06:55,362 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:06:55,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:06:55,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:06:55,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:06:55,814 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:06:55,815 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:06:55,815 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2020-10-29 13:06:55,889 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a5cfd010/a8192604d8c94bd0ac62cb4c04c2ba17/FLAGc3097b3f8 [2020-10-29 13:06:56,738 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:06:56,738 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2020-10-29 13:06:56,762 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a5cfd010/a8192604d8c94bd0ac62cb4c04c2ba17/FLAGc3097b3f8 [2020-10-29 13:06:56,896 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a5cfd010/a8192604d8c94bd0ac62cb4c04c2ba17 [2020-10-29 13:06:56,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:06:56,911 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:06:56,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:06:56,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:06:56,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:06:56,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:06:56" (1/1) ... [2020-10-29 13:06:56,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a4e9931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:06:56, skipping insertion in model container [2020-10-29 13:06:56,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:06:56" (1/1) ... [2020-10-29 13:06:56,941 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:06:57,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:06:58,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:06:58,273 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:06:58,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:06:58,751 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:06:58,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:06:58 WrapperNode [2020-10-29 13:06:58,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:06:58,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:06:58,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:06:58,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:06:58,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:06:58" (1/1) ... [2020-10-29 13:06:58,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:06:58" (1/1) ... [2020-10-29 13:06:58,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:06:58" (1/1) ... [2020-10-29 13:06:58,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:06:58" (1/1) ... [2020-10-29 13:06:58,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:06:58" (1/1) ... [2020-10-29 13:06:58,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:06:58" (1/1) ... [2020-10-29 13:06:58,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:06:58" (1/1) ... [2020-10-29 13:06:59,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:06:59,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:06:59,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:06:59,006 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:06:59,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:06:58" (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 13:06:59,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:06:59,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:06:59,104 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:06:59,104 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:06:59,105 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:06:59,106 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:06:59,106 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:06:59,106 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:06:59,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:06:59,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:06:59,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:06:59,108 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:06:59,108 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:06:59,109 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:06:59,109 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:06:59,110 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:06:59,110 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:06:59,110 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:06:59,110 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:06:59,111 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:06:59,111 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:06:59,111 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:06:59,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:06:59,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:06:59,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:06:59,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:06:59,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:06:59,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:07:02,824 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:07:02,824 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:07:02,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:07:02 BoogieIcfgContainer [2020-10-29 13:07:02,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:07:02,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:07:02,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:07:02,834 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:07:02,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:06:56" (1/3) ... [2020-10-29 13:07:02,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@550d86ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:07:02, skipping insertion in model container [2020-10-29 13:07:02,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:06:58" (2/3) ... [2020-10-29 13:07:02,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@550d86ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:07:02, skipping insertion in model container [2020-10-29 13:07:02,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:07:02" (3/3) ... [2020-10-29 13:07:02,837 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2020-10-29 13:07:02,850 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:07:02,856 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:07:02,870 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:07:02,906 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:07:02,906 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:07:02,906 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:07:02,907 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:07:02,907 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:07:02,907 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:07:02,907 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:07:02,907 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:07:02,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states. [2020-10-29 13:07:02,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-29 13:07:02,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:07:02,989 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] [2020-10-29 13:07:02,989 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:07:02,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:07:02,996 INFO L82 PathProgramCache]: Analyzing trace with hash 662757885, now seen corresponding path program 1 times [2020-10-29 13:07:03,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:07:03,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857594360] [2020-10-29 13:07:03,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:07:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:07:03,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:04,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:04,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:04,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:04,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:05,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:05,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:06,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:06,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:08,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:07:08,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-29 13:07:08,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:07:08,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 13:07:08,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:07:08,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:07:08,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:07:08,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-29 13:07:08,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 13:07:08,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 13:07:08,801 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2020-10-29 13:07:09,564 WARN L193 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-29 13:07:09,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:07:09,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:07:09,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:09,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:07:09,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:07:09,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:07:09,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 13:07:09,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:07:09,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:07:09,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:07:09,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:07:09,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:07:09,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:07:09,726 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 13:07:09,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857594360] [2020-10-29 13:07:09,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:07:09,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:07:09,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190833796] [2020-10-29 13:07:09,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:07:09,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:07:09,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:07:09,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:07:09,761 INFO L87 Difference]: Start difference. First operand 1082 states. Second operand 4 states. [2020-10-29 13:07:18,240 WARN L193 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 13:07:19,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:07:19,282 INFO L93 Difference]: Finished difference Result 2530 states and 4387 transitions. [2020-10-29 13:07:19,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:07:19,284 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2020-10-29 13:07:19,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:07:19,323 INFO L225 Difference]: With dead ends: 2530 [2020-10-29 13:07:19,326 INFO L226 Difference]: Without dead ends: 1797 [2020-10-29 13:07:19,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:07:19,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2020-10-29 13:07:19,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1739. [2020-10-29 13:07:19,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1739 states. [2020-10-29 13:07:19,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1739 states to 1739 states and 2998 transitions. [2020-10-29 13:07:19,516 INFO L78 Accepts]: Start accepts. Automaton has 1739 states and 2998 transitions. Word has length 161 [2020-10-29 13:07:19,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:07:19,517 INFO L481 AbstractCegarLoop]: Abstraction has 1739 states and 2998 transitions. [2020-10-29 13:07:19,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:07:19,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1739 states and 2998 transitions. [2020-10-29 13:07:19,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-29 13:07:19,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:07:19,525 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] [2020-10-29 13:07:19,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:07:19,525 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:07:19,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:07:19,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1462246097, now seen corresponding path program 1 times [2020-10-29 13:07:19,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:07:19,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045776491] [2020-10-29 13:07:19,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:07:19,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:07:19,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:19,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:20,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:20,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:20,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:20,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:20,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:20,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:21,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:24,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:07:24,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 13:07:24,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:07:24,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 13:07:24,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:07:24,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:07:24,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:07:24,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:07:24,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 13:07:24,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:07:25,631 WARN L193 SmtUtils]: Spent 820.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-29 13:07:25,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:07:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:07:25,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:25,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:07:25,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:07:25,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:07:25,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 13:07:25,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:07:25,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:07:25,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:07:25,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:07:25,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:07:25,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:07:25,839 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 13:07:25,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045776491] [2020-10-29 13:07:25,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:07:25,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:07:25,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486711170] [2020-10-29 13:07:25,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:07:25,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:07:25,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:07:25,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:07:25,845 INFO L87 Difference]: Start difference. First operand 1739 states and 2998 transitions. Second operand 5 states. [2020-10-29 13:07:35,246 WARN L193 SmtUtils]: Spent 786.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 13:07:37,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:07:37,387 INFO L93 Difference]: Finished difference Result 5088 states and 8783 transitions. [2020-10-29 13:07:37,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:07:37,388 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-29 13:07:37,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:07:37,409 INFO L225 Difference]: With dead ends: 5088 [2020-10-29 13:07:37,409 INFO L226 Difference]: Without dead ends: 3402 [2020-10-29 13:07:37,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:07:37,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3402 states. [2020-10-29 13:07:37,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3402 to 3398. [2020-10-29 13:07:37,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3398 states. [2020-10-29 13:07:37,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3398 states to 3398 states and 5851 transitions. [2020-10-29 13:07:37,631 INFO L78 Accepts]: Start accepts. Automaton has 3398 states and 5851 transitions. Word has length 170 [2020-10-29 13:07:37,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:07:37,632 INFO L481 AbstractCegarLoop]: Abstraction has 3398 states and 5851 transitions. [2020-10-29 13:07:37,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:07:37,633 INFO L276 IsEmpty]: Start isEmpty. Operand 3398 states and 5851 transitions. [2020-10-29 13:07:37,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-29 13:07:37,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:07:37,642 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] [2020-10-29 13:07:37,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:07:37,642 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:07:37,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:07:37,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1665619902, now seen corresponding path program 1 times [2020-10-29 13:07:37,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:07:37,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50314805] [2020-10-29 13:07:37,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:07:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:07:37,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:37,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:37,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:38,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:38,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:38,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:38,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:38,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:40,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:40,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:40,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:40,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:42,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:07:42,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 13:07:42,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:07:42,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-29 13:07:42,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:07:42,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:07:42,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:07:42,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-29 13:07:42,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 13:07:42,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:07:43,620 WARN L193 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-29 13:07:43,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:07:43,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:07:43,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:43,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:07:43,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:07:43,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:07:43,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 13:07:43,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:07:43,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:07:43,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:07:43,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:07:43,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:07:43,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:07:43,732 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 13:07:43,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50314805] [2020-10-29 13:07:43,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:07:43,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:07:43,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85286239] [2020-10-29 13:07:43,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:07:43,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:07:43,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:07:43,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:07:43,735 INFO L87 Difference]: Start difference. First operand 3398 states and 5851 transitions. Second operand 4 states. [2020-10-29 13:07:56,230 WARN L193 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 306 [2020-10-29 13:07:58,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:07:58,108 INFO L93 Difference]: Finished difference Result 9855 states and 16975 transitions. [2020-10-29 13:07:58,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:07:58,109 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 172 [2020-10-29 13:07:58,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:07:58,144 INFO L225 Difference]: With dead ends: 9855 [2020-10-29 13:07:58,145 INFO L226 Difference]: Without dead ends: 6583 [2020-10-29 13:07:58,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:07:58,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6583 states. [2020-10-29 13:07:58,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6583 to 6579. [2020-10-29 13:07:58,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6579 states. [2020-10-29 13:07:58,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6579 states to 6579 states and 11300 transitions. [2020-10-29 13:07:58,573 INFO L78 Accepts]: Start accepts. Automaton has 6579 states and 11300 transitions. Word has length 172 [2020-10-29 13:07:58,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:07:58,574 INFO L481 AbstractCegarLoop]: Abstraction has 6579 states and 11300 transitions. [2020-10-29 13:07:58,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:07:58,574 INFO L276 IsEmpty]: Start isEmpty. Operand 6579 states and 11300 transitions. [2020-10-29 13:07:58,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-29 13:07:58,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:07:58,591 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] [2020-10-29 13:07:58,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:07:58,591 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:07:58,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:07:58,592 INFO L82 PathProgramCache]: Analyzing trace with hash 580101123, now seen corresponding path program 1 times [2020-10-29 13:07:58,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:07:58,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865084615] [2020-10-29 13:07:58,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:07:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:07:58,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:58,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:58,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:58,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:59,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:59,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:59,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:59,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:59,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:59,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:03,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:08:03,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 13:08:03,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:08:03,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-29 13:08:03,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:08:03,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:08:03,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:08:03,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:08:03,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 13:08:03,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:08:04,588 WARN L193 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-29 13:08:04,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:08:04,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:04,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:04,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:08:04,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:08:04,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:08:04,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 13:08:04,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:08:04,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:08:04,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:08:04,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:08:04,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:08:04,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:08:04,746 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 13:08:04,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865084615] [2020-10-29 13:08:04,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:08:04,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:08:04,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602392831] [2020-10-29 13:08:04,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:08:04,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:08:04,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:08:04,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:08:04,750 INFO L87 Difference]: Start difference. First operand 6579 states and 11300 transitions. Second operand 5 states. [2020-10-29 13:08:14,047 WARN L193 SmtUtils]: Spent 672.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 13:08:16,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:08:16,203 INFO L93 Difference]: Finished difference Result 19270 states and 33125 transitions. [2020-10-29 13:08:16,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:08:16,204 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-29 13:08:16,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:08:16,263 INFO L225 Difference]: With dead ends: 19270 [2020-10-29 13:08:16,263 INFO L226 Difference]: Without dead ends: 12856 [2020-10-29 13:08:16,279 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 13:08:16,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12856 states. [2020-10-29 13:08:17,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12856 to 12852. [2020-10-29 13:08:17,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12852 states. [2020-10-29 13:08:17,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12852 states to 12852 states and 22021 transitions. [2020-10-29 13:08:17,331 INFO L78 Accepts]: Start accepts. Automaton has 12852 states and 22021 transitions. Word has length 172 [2020-10-29 13:08:17,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:08:17,331 INFO L481 AbstractCegarLoop]: Abstraction has 12852 states and 22021 transitions. [2020-10-29 13:08:17,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:08:17,332 INFO L276 IsEmpty]: Start isEmpty. Operand 12852 states and 22021 transitions. [2020-10-29 13:08:17,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-29 13:08:17,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:08:17,361 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] [2020-10-29 13:08:17,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:08:17,362 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:08:17,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:08:17,362 INFO L82 PathProgramCache]: Analyzing trace with hash 6937470, now seen corresponding path program 1 times [2020-10-29 13:08:17,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:08:17,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414551887] [2020-10-29 13:08:17,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:08:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:17,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:17,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:17,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:17,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:17,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:17,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:17,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:17,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:18,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:18,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:19,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:22,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:08:22,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-29 13:08:22,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 13:08:22,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 13:08:22,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:08:22,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:08:22,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:08:22,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:08:22,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 13:08:22,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:08:23,317 WARN L193 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-29 13:08:23,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:08:23,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:23,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:23,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:08:23,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:08:23,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:08:23,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 13:08:23,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:08:23,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:08:23,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:08:23,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:08:23,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:08:23,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 13:08:23,463 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 13:08:23,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414551887] [2020-10-29 13:08:23,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:08:23,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:08:23,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482380040] [2020-10-29 13:08:23,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:08:23,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:08:23,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:08:23,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:08:23,466 INFO L87 Difference]: Start difference. First operand 12852 states and 22021 transitions. Second operand 5 states. [2020-10-29 13:08:35,061 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 13:08:37,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:08:37,280 INFO L93 Difference]: Finished difference Result 26643 states and 45725 transitions. [2020-10-29 13:08:37,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:08:37,281 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-10-29 13:08:37,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:08:37,315 INFO L225 Difference]: With dead ends: 26643 [2020-10-29 13:08:37,316 INFO L226 Difference]: Without dead ends: 13995 [2020-10-29 13:08:37,340 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 13:08:37,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13995 states. [2020-10-29 13:08:38,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13995 to 12973. [2020-10-29 13:08:38,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12973 states. [2020-10-29 13:08:38,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12973 states to 12973 states and 22237 transitions. [2020-10-29 13:08:38,468 INFO L78 Accepts]: Start accepts. Automaton has 12973 states and 22237 transitions. Word has length 174 [2020-10-29 13:08:38,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:08:38,468 INFO L481 AbstractCegarLoop]: Abstraction has 12973 states and 22237 transitions. [2020-10-29 13:08:38,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:08:38,468 INFO L276 IsEmpty]: Start isEmpty. Operand 12973 states and 22237 transitions. [2020-10-29 13:08:38,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-29 13:08:38,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:08:38,505 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] [2020-10-29 13:08:38,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:08:38,505 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:08:38,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:08:38,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1966373298, now seen corresponding path program 1 times [2020-10-29 13:08:38,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:08:38,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085115710] [2020-10-29 13:08:38,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:08:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:38,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:38,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:38,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:38,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:38,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:38,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:38,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:39,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:39,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:40,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:40,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:40,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:43,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:08:43,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-29 13:08:43,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:08:43,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 13:08:43,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:08:43,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:08:43,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:08:43,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 13:08:43,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 13:08:43,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:08:44,396 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-29 13:08:44,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:08:44,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:44,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:44,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:08:44,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:08:44,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:08:44,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 13:08:44,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:08:44,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:08:44,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:08:44,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:08:44,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:08:44,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:08:44,472 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 13:08:44,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085115710] [2020-10-29 13:08:44,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:08:44,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:08:44,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253881385] [2020-10-29 13:08:44,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:08:44,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:08:44,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:08:44,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:08:44,474 INFO L87 Difference]: Start difference. First operand 12973 states and 22237 transitions. Second operand 4 states. [2020-10-29 13:08:53,831 WARN L193 SmtUtils]: Spent 805.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 13:08:55,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:08:55,058 INFO L93 Difference]: Finished difference Result 31649 states and 54207 transitions. [2020-10-29 13:08:55,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:08:55,060 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 176 [2020-10-29 13:08:55,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:08:55,110 INFO L225 Difference]: With dead ends: 31649 [2020-10-29 13:08:55,110 INFO L226 Difference]: Without dead ends: 22313 [2020-10-29 13:08:55,131 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 13:08:55,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22313 states. [2020-10-29 13:08:56,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22313 to 21445. [2020-10-29 13:08:56,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21445 states. [2020-10-29 13:08:56,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21445 states to 21445 states and 36605 transitions. [2020-10-29 13:08:56,937 INFO L78 Accepts]: Start accepts. Automaton has 21445 states and 36605 transitions. Word has length 176 [2020-10-29 13:08:56,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:08:56,937 INFO L481 AbstractCegarLoop]: Abstraction has 21445 states and 36605 transitions. [2020-10-29 13:08:56,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:08:56,937 INFO L276 IsEmpty]: Start isEmpty. Operand 21445 states and 36605 transitions. [2020-10-29 13:08:56,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-29 13:08:56,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:08:56,977 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] [2020-10-29 13:08:56,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:08:56,977 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:08:56,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:08:56,978 INFO L82 PathProgramCache]: Analyzing trace with hash 80769406, now seen corresponding path program 1 times [2020-10-29 13:08:56,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:08:56,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810020831] [2020-10-29 13:08:56,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:08:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:57,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:57,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:57,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:57,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:57,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:57,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:57,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:57,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:57,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:57,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:58,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:02,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:09:02,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-29 13:09:02,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 13:09:02,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-29 13:09:02,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:09:02,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:09:02,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:09:02,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-29 13:09:02,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 13:09:02,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:09:02,808 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-29 13:09:02,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:09:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:09:02,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:02,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:09:02,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:09:02,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:09:02,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:09:02,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:09:02,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:09:02,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:09:02,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:09:02,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:09:02,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:09:02,868 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 13:09:02,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810020831] [2020-10-29 13:09:02,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:09:02,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:09:02,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912256933] [2020-10-29 13:09:02,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:09:02,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:09:02,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:09:02,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:09:02,871 INFO L87 Difference]: Start difference. First operand 21445 states and 36605 transitions. Second operand 5 states. [2020-10-29 13:09:20,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:09:20,090 INFO L93 Difference]: Finished difference Result 60539 states and 103157 transitions. [2020-10-29 13:09:20,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:09:20,090 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-29 13:09:20,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:09:20,177 INFO L225 Difference]: With dead ends: 60539 [2020-10-29 13:09:20,177 INFO L226 Difference]: Without dead ends: 39995 [2020-10-29 13:09:20,225 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 13:09:20,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39995 states. [2020-10-29 13:09:22,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39995 to 21972. [2020-10-29 13:09:22,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21972 states. [2020-10-29 13:09:22,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21972 states to 21972 states and 37520 transitions. [2020-10-29 13:09:22,520 INFO L78 Accepts]: Start accepts. Automaton has 21972 states and 37520 transitions. Word has length 185 [2020-10-29 13:09:22,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:09:22,521 INFO L481 AbstractCegarLoop]: Abstraction has 21972 states and 37520 transitions. [2020-10-29 13:09:22,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:09:22,521 INFO L276 IsEmpty]: Start isEmpty. Operand 21972 states and 37520 transitions. [2020-10-29 13:09:22,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-29 13:09:22,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:09:22,549 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] [2020-10-29 13:09:22,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:09:22,550 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:09:22,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:09:22,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1965747689, now seen corresponding path program 1 times [2020-10-29 13:09:22,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:09:22,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200273986] [2020-10-29 13:09:22,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:09:22,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:09:22,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:22,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:22,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:22,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:22,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:22,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:22,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:23,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:23,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:24,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:24,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:24,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:27,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:09:27,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 13:09:27,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:09:27,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 13:09:27,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:09:27,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:09:27,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:09:27,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:09:27,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 13:09:27,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:09:28,512 WARN L193 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-29 13:09:28,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:09:28,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:09:28,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:28,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:09:28,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:09:28,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:09:28,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 13:09:28,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:09:28,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:09:28,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:09:28,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:09:28,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:09:28,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:09:28,640 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 13:09:28,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200273986] [2020-10-29 13:09:28,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:09:28,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:09:28,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755403923] [2020-10-29 13:09:28,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:09:28,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:09:28,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:09:28,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:09:28,643 INFO L87 Difference]: Start difference. First operand 21972 states and 37520 transitions. Second operand 5 states. [2020-10-29 13:09:43,602 WARN L193 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 13:09:46,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:09:46,688 INFO L93 Difference]: Finished difference Result 64760 states and 110593 transitions. [2020-10-29 13:09:46,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:09:46,689 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2020-10-29 13:09:46,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:09:46,798 INFO L225 Difference]: With dead ends: 64760 [2020-10-29 13:09:46,799 INFO L226 Difference]: Without dead ends: 43342 [2020-10-29 13:09:46,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:09:46,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43342 states. [2020-10-29 13:09:50,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43342 to 43338. [2020-10-29 13:09:50,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43338 states. [2020-10-29 13:09:50,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43338 states to 43338 states and 73811 transitions. [2020-10-29 13:09:50,826 INFO L78 Accepts]: Start accepts. Automaton has 43338 states and 73811 transitions. Word has length 186 [2020-10-29 13:09:50,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:09:50,826 INFO L481 AbstractCegarLoop]: Abstraction has 43338 states and 73811 transitions. [2020-10-29 13:09:50,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:09:50,827 INFO L276 IsEmpty]: Start isEmpty. Operand 43338 states and 73811 transitions. [2020-10-29 13:09:50,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-29 13:09:50,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:09:50,872 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] [2020-10-29 13:09:50,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:09:50,872 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:09:50,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:09:50,873 INFO L82 PathProgramCache]: Analyzing trace with hash 59846824, now seen corresponding path program 1 times [2020-10-29 13:09:50,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:09:50,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298347485] [2020-10-29 13:09:50,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:09:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:09:50,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:50,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:51,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:51,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:51,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:51,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:51,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:51,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:51,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:51,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:54,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:54,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:55,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:09:55,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-29 13:09:55,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:09:55,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 13:09:55,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:09:55,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:09:55,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:09:55,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 13:09:55,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 13:09:55,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:09:56,688 WARN L193 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-29 13:09:56,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:09:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:09:56,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:56,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:09:56,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:09:56,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:09:56,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 13:09:56,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:09:56,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:09:56,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:09:56,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:09:56,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:09:56,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:09:56,778 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 13:09:56,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298347485] [2020-10-29 13:09:56,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:09:56,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:09:56,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926147538] [2020-10-29 13:09:56,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:09:56,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:09:56,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:09:56,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:09:56,780 INFO L87 Difference]: Start difference. First operand 43338 states and 73811 transitions. Second operand 4 states. [2020-10-29 13:10:17,469 WARN L193 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 306 [2020-10-29 13:10:20,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:10:20,744 INFO L93 Difference]: Finished difference Result 127124 states and 216683 transitions. [2020-10-29 13:10:20,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:10:20,745 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 188 [2020-10-29 13:10:20,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:10:20,846 INFO L225 Difference]: With dead ends: 127124 [2020-10-29 13:10:20,846 INFO L226 Difference]: Without dead ends: 84634 [2020-10-29 13:10:20,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:10:20,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84634 states. [2020-10-29 13:10:28,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84634 to 84616. [2020-10-29 13:10:28,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84616 states. [2020-10-29 13:10:29,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84616 states to 84616 states and 143647 transitions. [2020-10-29 13:10:29,176 INFO L78 Accepts]: Start accepts. Automaton has 84616 states and 143647 transitions. Word has length 188 [2020-10-29 13:10:29,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:10:29,176 INFO L481 AbstractCegarLoop]: Abstraction has 84616 states and 143647 transitions. [2020-10-29 13:10:29,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:10:29,176 INFO L276 IsEmpty]: Start isEmpty. Operand 84616 states and 143647 transitions. [2020-10-29 13:10:29,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-29 13:10:29,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:10:29,270 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] [2020-10-29 13:10:29,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:10:29,271 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:10:29,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:10:29,271 INFO L82 PathProgramCache]: Analyzing trace with hash 2142240941, now seen corresponding path program 1 times [2020-10-29 13:10:29,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:10:29,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716806987] [2020-10-29 13:10:29,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:10:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:10:29,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:29,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:29,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:29,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:29,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:29,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:29,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:29,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:29,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:29,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:30,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking...