/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_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:40:07,098 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:40:07,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:40:07,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:40:07,140 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:40:07,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:40:07,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:40:07,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:40:07,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:40:07,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:40:07,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:40:07,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:40:07,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:40:07,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:40:07,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:40:07,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:40:07,158 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:40:07,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:40:07,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:40:07,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:40:07,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:40:07,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:40:07,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:40:07,169 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:40:07,173 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:40:07,173 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:40:07,173 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:40:07,175 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:40:07,175 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:40:07,176 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:40:07,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:40:07,178 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:40:07,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:40:07,180 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:40:07,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:40:07,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:40:07,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:40:07,182 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:40:07,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:40:07,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:40:07,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:40:07,194 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 13:40:07,222 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:40:07,223 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:40:07,224 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:40:07,225 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:40:07,225 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:40:07,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:40:07,225 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:40:07,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:40:07,226 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:40:07,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:40:07,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:40:07,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:40:07,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:40:07,227 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:40:07,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:40:07,228 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:40:07,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:40:07,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:40:07,229 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:40:07,229 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:40:07,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:40:07,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:40:07,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:40:07,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:40:07,230 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:40:07,230 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:40:07,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:40:07,231 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:40:07,231 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:40:07,231 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:40:07,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:40:07,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:40:07,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:40:07,687 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:40:07,688 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:40:07,690 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-29 13:40:07,771 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96ce5da0c/ee718c8491dc4676b8c2b896c8f9b222/FLAG5384ac152 [2020-10-29 13:40:08,676 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:40:08,678 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-29 13:40:08,701 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96ce5da0c/ee718c8491dc4676b8c2b896c8f9b222/FLAG5384ac152 [2020-10-29 13:40:08,807 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96ce5da0c/ee718c8491dc4676b8c2b896c8f9b222 [2020-10-29 13:40:08,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:40:08,817 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:40:08,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:40:08,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:40:08,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:40:08,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:40:08" (1/1) ... [2020-10-29 13:40:08,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@151f1b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:40:08, skipping insertion in model container [2020-10-29 13:40:08,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:40:08" (1/1) ... [2020-10-29 13:40:08,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:40:08,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:40:09,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:40:09,503 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:40:09,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:40:09,945 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:40:09,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:40:09 WrapperNode [2020-10-29 13:40:09,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:40:09,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:40:09,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:40:09,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:40:09,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:40:09" (1/1) ... [2020-10-29 13:40:09,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:40:09" (1/1) ... [2020-10-29 13:40:10,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:40:09" (1/1) ... [2020-10-29 13:40:10,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:40:09" (1/1) ... [2020-10-29 13:40:10,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:40:09" (1/1) ... [2020-10-29 13:40:10,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:40:09" (1/1) ... [2020-10-29 13:40:10,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:40:09" (1/1) ... [2020-10-29 13:40:10,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:40:10,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:40:10,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:40:10,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:40:10,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:40:09" (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 13:40:10,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:40:10,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:40:10,236 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:40:10,236 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:40:10,237 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:40:10,237 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:40:10,237 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:40:10,237 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:40:10,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:40:10,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:40:10,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:40:10,238 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:40:10,238 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:40:10,238 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:40:10,238 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:40:10,238 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:40:10,238 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:40:10,239 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:40:10,239 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:40:10,239 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:40:10,239 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:40:10,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:40:10,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:40:10,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:40:10,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:40:10,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:40:10,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:40:12,859 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:40:12,860 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:40:12,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:40:12 BoogieIcfgContainer [2020-10-29 13:40:12,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:40:12,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:40:12,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:40:12,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:40:12,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:40:08" (1/3) ... [2020-10-29 13:40:12,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@132a82e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:40:12, skipping insertion in model container [2020-10-29 13:40:12,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:40:09" (2/3) ... [2020-10-29 13:40:12,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@132a82e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:40:12, skipping insertion in model container [2020-10-29 13:40:12,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:40:12" (3/3) ... [2020-10-29 13:40:12,872 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-29 13:40:12,885 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:40:12,890 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:40:12,905 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:40:12,937 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:40:12,937 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:40:12,937 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:40:12,938 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:40:12,938 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:40:12,938 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:40:12,938 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:40:12,938 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:40:12,970 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states. [2020-10-29 13:40:12,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 13:40:12,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:40:12,988 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] [2020-10-29 13:40:12,989 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:40:12,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:40:12,995 INFO L82 PathProgramCache]: Analyzing trace with hash 973982076, now seen corresponding path program 1 times [2020-10-29 13:40:13,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:40:13,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595142899] [2020-10-29 13:40:13,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:40:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:40:13,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:13,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:13,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:14,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:15,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:15,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:15,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:16,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:16,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:17,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:17,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:17,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:18,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:18,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:40:18,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 13:40:18,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:40:18,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 13:40:18,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:40:18,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:40:18,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 13:40:18,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:40:18,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 13:40:18,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 13:40:19,827 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 13:40:19,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:40:19,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:40:19,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:19,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:40:19,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:40:19,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:40:19,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 13:40:19,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:40:19,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:40:19,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:40:19,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:40:19,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:40:19,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:40:19,954 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 13:40:19,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595142899] [2020-10-29 13:40:19,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:40:19,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:40:19,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545532935] [2020-10-29 13:40:19,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 13:40:19,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:40:19,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 13:40:19,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:40:19,982 INFO L87 Difference]: Start difference. First operand 466 states. Second operand 7 states. [2020-10-29 13:40:21,273 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 312 [2020-10-29 13:40:27,007 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 315 [2020-10-29 13:40:29,297 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 313 [2020-10-29 13:40:29,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:40:29,580 INFO L93 Difference]: Finished difference Result 883 states and 1519 transitions. [2020-10-29 13:40:29,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 13:40:29,583 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-10-29 13:40:29,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:40:29,621 INFO L225 Difference]: With dead ends: 883 [2020-10-29 13:40:29,621 INFO L226 Difference]: Without dead ends: 703 [2020-10-29 13:40:29,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-10-29 13:40:29,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2020-10-29 13:40:29,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 460. [2020-10-29 13:40:29,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-10-29 13:40:29,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 597 transitions. [2020-10-29 13:40:29,779 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 597 transitions. Word has length 56 [2020-10-29 13:40:29,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:40:29,781 INFO L481 AbstractCegarLoop]: Abstraction has 460 states and 597 transitions. [2020-10-29 13:40:29,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 13:40:29,781 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 597 transitions. [2020-10-29 13:40:29,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 13:40:29,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:40:29,800 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] [2020-10-29 13:40:29,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:40:29,800 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:40:29,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:40:29,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1596873572, now seen corresponding path program 1 times [2020-10-29 13:40:29,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:40:29,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178846675] [2020-10-29 13:40:29,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:40:29,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:40:29,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:29,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:30,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:30,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:30,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:31,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:31,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:31,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:31,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:32,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:32,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:32,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:33,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:34,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:34,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:40:34,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 13:40:34,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 13:40:34,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 13:40:34,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:40:34,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:40:34,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:40:34,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:40:34,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 13:40:34,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:40:36,150 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 13:40:36,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:40:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:40:36,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:36,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:40:36,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:40:36,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:40:36,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 13:40:36,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:40:36,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:40:36,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:40:36,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:40:36,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:40:36,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:40:36,261 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 13:40:36,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178846675] [2020-10-29 13:40:36,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:40:36,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:40:36,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152163563] [2020-10-29 13:40:36,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:40:36,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:40:36,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:40:36,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:40:36,268 INFO L87 Difference]: Start difference. First operand 460 states and 597 transitions. Second operand 6 states. [2020-10-29 13:40:37,610 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 316 [2020-10-29 13:40:41,334 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 314 [2020-10-29 13:40:42,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:40:42,115 INFO L93 Difference]: Finished difference Result 771 states and 1026 transitions. [2020-10-29 13:40:42,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:40:42,117 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-29 13:40:42,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:40:42,122 INFO L225 Difference]: With dead ends: 771 [2020-10-29 13:40:42,122 INFO L226 Difference]: Without dead ends: 525 [2020-10-29 13:40:42,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:40:42,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2020-10-29 13:40:42,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 517. [2020-10-29 13:40:42,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 517 states. [2020-10-29 13:40:42,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 674 transitions. [2020-10-29 13:40:42,186 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 674 transitions. Word has length 56 [2020-10-29 13:40:42,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:40:42,187 INFO L481 AbstractCegarLoop]: Abstraction has 517 states and 674 transitions. [2020-10-29 13:40:42,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:40:42,187 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 674 transitions. [2020-10-29 13:40:42,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 13:40:42,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:40:42,192 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] [2020-10-29 13:40:42,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:40:42,192 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:40:42,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:40:42,197 INFO L82 PathProgramCache]: Analyzing trace with hash 589175137, now seen corresponding path program 1 times [2020-10-29 13:40:42,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:40:42,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178487661] [2020-10-29 13:40:42,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:40:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:40:42,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:42,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:42,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:42,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:42,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:43,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:44,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:44,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:44,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:45,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:45,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:45,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:45,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:47,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:40:47,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 13:40:47,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:40:47,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 13:40:47,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:40:47,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:40:47,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:40:47,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:40:47,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 13:40:47,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:40:48,643 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 13:40:48,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:40:48,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:40:48,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:48,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:40:48,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:40:48,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:40:48,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 13:40:48,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:40:48,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:40:48,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:40:48,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:40:48,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:40:48,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:40:48,699 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 13:40:48,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178487661] [2020-10-29 13:40:48,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:40:48,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:40:48,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815115470] [2020-10-29 13:40:48,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:40:48,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:40:48,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:40:48,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:40:48,702 INFO L87 Difference]: Start difference. First operand 517 states and 674 transitions. Second operand 8 states. [2020-10-29 13:40:51,397 WARN L193 SmtUtils]: Spent 2.56 s on a formula simplification. DAG size of input: 321 DAG size of output: 317 [2020-10-29 13:40:56,775 WARN L193 SmtUtils]: Spent 2.42 s on a formula simplification. DAG size of input: 322 DAG size of output: 315 [2020-10-29 13:40:58,377 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 309 [2020-10-29 13:41:02,059 WARN L193 SmtUtils]: Spent 2.55 s on a formula simplification. DAG size of input: 321 DAG size of output: 314 [2020-10-29 13:41:03,475 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 308 [2020-10-29 13:41:03,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:41:03,925 INFO L93 Difference]: Finished difference Result 2349 states and 3411 transitions. [2020-10-29 13:41:03,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 13:41:03,926 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-29 13:41:03,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:41:03,939 INFO L225 Difference]: With dead ends: 2349 [2020-10-29 13:41:03,939 INFO L226 Difference]: Without dead ends: 2145 [2020-10-29 13:41:03,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=193, Invalid=677, Unknown=0, NotChecked=0, Total=870 [2020-10-29 13:41:03,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2145 states. [2020-10-29 13:41:04,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2145 to 532. [2020-10-29 13:41:04,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2020-10-29 13:41:04,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 685 transitions. [2020-10-29 13:41:04,024 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 685 transitions. Word has length 56 [2020-10-29 13:41:04,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:41:04,025 INFO L481 AbstractCegarLoop]: Abstraction has 532 states and 685 transitions. [2020-10-29 13:41:04,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:41:04,025 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 685 transitions. [2020-10-29 13:41:04,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 13:41:04,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:41:04,027 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:41:04,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:41:04,028 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:41:04,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:41:04,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1216993236, now seen corresponding path program 1 times [2020-10-29 13:41:04,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:41:04,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56885804] [2020-10-29 13:41:04,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:41:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:41:04,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:04,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:04,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:04,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:04,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:05,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:05,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:06,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:07,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:07,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:08,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:08,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:08,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:09,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:41:09,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 13:41:09,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:41:09,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 13:41:09,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:41:09,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:41:09,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:41:09,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:41:09,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 13:41:09,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:41:10,410 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 13:41:10,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:41:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:41:10,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:10,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:41:10,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:41:10,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:41:10,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 13:41:10,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:41:10,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:41:10,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:41:10,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:41:10,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:41:10,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:41:10,516 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 13:41:10,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56885804] [2020-10-29 13:41:10,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:41:10,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:41:10,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849875249] [2020-10-29 13:41:10,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:41:10,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:41:10,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:41:10,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:41:10,518 INFO L87 Difference]: Start difference. First operand 532 states and 685 transitions. Second operand 8 states. [2020-10-29 13:41:11,676 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 314 [2020-10-29 13:41:15,683 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 318 [2020-10-29 13:41:18,380 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 316 [2020-10-29 13:41:18,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:41:18,794 INFO L93 Difference]: Finished difference Result 1251 states and 1737 transitions. [2020-10-29 13:41:18,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 13:41:18,800 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-10-29 13:41:18,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:41:18,806 INFO L225 Difference]: With dead ends: 1251 [2020-10-29 13:41:18,807 INFO L226 Difference]: Without dead ends: 1072 [2020-10-29 13:41:18,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-29 13:41:18,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2020-10-29 13:41:18,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 555. [2020-10-29 13:41:18,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 555 states. [2020-10-29 13:41:18,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 716 transitions. [2020-10-29 13:41:18,856 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 716 transitions. Word has length 57 [2020-10-29 13:41:18,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:41:18,856 INFO L481 AbstractCegarLoop]: Abstraction has 555 states and 716 transitions. [2020-10-29 13:41:18,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:41:18,857 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 716 transitions. [2020-10-29 13:41:18,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 13:41:18,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:41:18,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:41:18,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:41:18,859 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:41:18,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:41:18,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1394114881, now seen corresponding path program 1 times [2020-10-29 13:41:18,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:41:18,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877596154] [2020-10-29 13:41:18,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:41:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:41:18,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:18,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:19,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:19,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:19,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:19,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:20,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:20,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:20,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:20,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:23,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:41:23,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 13:41:23,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:41:23,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 13:41:23,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:41:23,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:41:23,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:41:23,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 13:41:23,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 13:41:23,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:41:25,115 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 13:41:25,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:41:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:41:25,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:25,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:41:25,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:41:25,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:41:25,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 13:41:25,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:41:25,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:41:25,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:41:25,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:41:25,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:41:25,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:41:25,173 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 13:41:25,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877596154] [2020-10-29 13:41:25,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:41:25,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:41:25,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861807307] [2020-10-29 13:41:25,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:41:25,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:41:25,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:41:25,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:41:25,176 INFO L87 Difference]: Start difference. First operand 555 states and 716 transitions. Second operand 6 states. [2020-10-29 13:41:26,347 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 308 [2020-10-29 13:41:32,324 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 309 [2020-10-29 13:41:33,618 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 308 [2020-10-29 13:41:34,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:41:34,188 INFO L93 Difference]: Finished difference Result 2248 states and 3119 transitions. [2020-10-29 13:41:34,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 13:41:34,189 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-10-29 13:41:34,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:41:34,198 INFO L225 Difference]: With dead ends: 2248 [2020-10-29 13:41:34,198 INFO L226 Difference]: Without dead ends: 1799 [2020-10-29 13:41:34,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-29 13:41:34,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1799 states. [2020-10-29 13:41:34,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1799 to 1096. [2020-10-29 13:41:34,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1096 states. [2020-10-29 13:41:34,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1096 states to 1096 states and 1492 transitions. [2020-10-29 13:41:34,312 INFO L78 Accepts]: Start accepts. Automaton has 1096 states and 1492 transitions. Word has length 57 [2020-10-29 13:41:34,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:41:34,312 INFO L481 AbstractCegarLoop]: Abstraction has 1096 states and 1492 transitions. [2020-10-29 13:41:34,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:41:34,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1096 states and 1492 transitions. [2020-10-29 13:41:34,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 13:41:34,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:41:34,314 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] [2020-10-29 13:41:34,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:41:34,315 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:41:34,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:41:34,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1964081005, now seen corresponding path program 1 times [2020-10-29 13:41:34,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:41:34,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752793266] [2020-10-29 13:41:34,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:41:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:41:34,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:34,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:34,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:34,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:35,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:35,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:35,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:36,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:36,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:37,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:38,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:38,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:39,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:39,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:41:39,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 13:41:39,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:41:39,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 13:41:39,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:41:39,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:41:39,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:41:39,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:41:39,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 13:41:39,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:41:40,783 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 13:41:40,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:41:40,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:41:40,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:40,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:41:40,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:41:40,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:41:40,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 13:41:40,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:41:40,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:41:40,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:41:40,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:41:40,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:41:40,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:41:40,866 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 13:41:40,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752793266] [2020-10-29 13:41:40,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:41:40,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:41:40,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534373791] [2020-10-29 13:41:40,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:41:40,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:41:40,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:41:40,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:41:40,871 INFO L87 Difference]: Start difference. First operand 1096 states and 1492 transitions. Second operand 8 states. [2020-10-29 13:41:42,123 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 311 [2020-10-29 13:41:46,040 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 314 [2020-10-29 13:41:48,604 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 313 [2020-10-29 13:41:49,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:41:49,175 INFO L93 Difference]: Finished difference Result 3578 states and 5087 transitions. [2020-10-29 13:41:49,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 13:41:49,176 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-10-29 13:41:49,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:41:49,189 INFO L225 Difference]: With dead ends: 3578 [2020-10-29 13:41:49,190 INFO L226 Difference]: Without dead ends: 3008 [2020-10-29 13:41:49,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-29 13:41:49,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2020-10-29 13:41:49,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 1118. [2020-10-29 13:41:49,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1118 states. [2020-10-29 13:41:49,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 1522 transitions. [2020-10-29 13:41:49,339 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 1522 transitions. Word has length 58 [2020-10-29 13:41:49,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:41:49,339 INFO L481 AbstractCegarLoop]: Abstraction has 1118 states and 1522 transitions. [2020-10-29 13:41:49,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:41:49,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 1522 transitions. [2020-10-29 13:41:49,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 13:41:49,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:41:49,341 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] [2020-10-29 13:41:49,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:41:49,342 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:41:49,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:41:49,342 INFO L82 PathProgramCache]: Analyzing trace with hash 2062456464, now seen corresponding path program 1 times [2020-10-29 13:41:49,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:41:49,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362295239] [2020-10-29 13:41:49,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:41:49,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:41:49,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:49,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:49,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:49,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:50,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:54,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:41:54,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 13:41:54,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:41:54,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 13:41:54,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:41:54,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:41:54,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:41:54,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:41:54,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 13:41:54,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:41:55,941 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 13:41:55,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:41:55,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:41:55,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:55,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:41:55,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:41:55,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:41:55,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:41:55,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:41:55,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:41:55,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:41:55,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:41:55,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:41:55,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:41:55,987 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 13:41:55,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362295239] [2020-10-29 13:41:55,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:41:55,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:41:55,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901476157] [2020-10-29 13:41:55,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:41:55,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:41:55,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:41:55,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:41:55,990 INFO L87 Difference]: Start difference. First operand 1118 states and 1522 transitions. Second operand 8 states. [2020-10-29 13:41:57,258 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 315 [2020-10-29 13:42:00,956 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification that was a NOOP. DAG size: 321 [2020-10-29 13:42:03,338 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 313 [2020-10-29 13:42:03,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:42:03,904 INFO L93 Difference]: Finished difference Result 3401 states and 4873 transitions. [2020-10-29 13:42:03,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 13:42:03,904 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-10-29 13:42:03,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:42:03,915 INFO L225 Difference]: With dead ends: 3401 [2020-10-29 13:42:03,915 INFO L226 Difference]: Without dead ends: 2487 [2020-10-29 13:42:03,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-10-29 13:42:03,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2487 states. [2020-10-29 13:42:04,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2487 to 1212. [2020-10-29 13:42:04,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1212 states. [2020-10-29 13:42:04,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1688 transitions. [2020-10-29 13:42:04,102 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1688 transitions. Word has length 58 [2020-10-29 13:42:04,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:42:04,104 INFO L481 AbstractCegarLoop]: Abstraction has 1212 states and 1688 transitions. [2020-10-29 13:42:04,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:42:04,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1688 transitions. [2020-10-29 13:42:04,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 13:42:04,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:42:04,106 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] [2020-10-29 13:42:04,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:42:04,107 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:42:04,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:42:04,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1864940519, now seen corresponding path program 1 times [2020-10-29 13:42:04,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:42:04,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906972672] [2020-10-29 13:42:04,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:42:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:42:04,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:04,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:04,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:04,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:04,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:09,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:42:09,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 13:42:09,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:42:09,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4897 [2020-10-29 13:42:09,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:42:09,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:42:09,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:42:09,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:42:09,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 13:42:09,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:42:10,484 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 13:42:10,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:42:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:42:10,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:10,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:42:10,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:42:10,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:42:10,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 13:42:10,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:42:10,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:42:10,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:42:10,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:42:10,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:42:10,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:42:10,534 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 13:42:10,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906972672] [2020-10-29 13:42:10,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:42:10,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:42:10,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982643207] [2020-10-29 13:42:10,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:42:10,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:42:10,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:42:10,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:42:10,537 INFO L87 Difference]: Start difference. First operand 1212 states and 1688 transitions. Second operand 9 states. [2020-10-29 13:42:11,907 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 328 [2020-10-29 13:42:15,575 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification that was a NOOP. DAG size: 326 [2020-10-29 13:42:18,304 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 322 [2020-10-29 13:42:19,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:42:19,405 INFO L93 Difference]: Finished difference Result 6131 states and 9033 transitions. [2020-10-29 13:42:19,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 13:42:19,405 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2020-10-29 13:42:19,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:42:19,427 INFO L225 Difference]: With dead ends: 6131 [2020-10-29 13:42:19,427 INFO L226 Difference]: Without dead ends: 6126 [2020-10-29 13:42:19,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2020-10-29 13:42:19,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6126 states. [2020-10-29 13:42:19,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6126 to 1227. [2020-10-29 13:42:19,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1227 states. [2020-10-29 13:42:19,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1710 transitions. [2020-10-29 13:42:19,716 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1710 transitions. Word has length 59 [2020-10-29 13:42:19,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:42:19,716 INFO L481 AbstractCegarLoop]: Abstraction has 1227 states and 1710 transitions. [2020-10-29 13:42:19,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:42:19,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1710 transitions. [2020-10-29 13:42:19,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-29 13:42:19,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:42:19,719 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] [2020-10-29 13:42:19,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:42:19,719 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:42:19,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:42:19,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1913619004, now seen corresponding path program 1 times [2020-10-29 13:42:19,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:42:19,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258778178] [2020-10-29 13:42:19,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:42:19,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:42:19,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:19,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:19,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:20,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:20,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:20,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:20,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:21,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:21,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:21,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:22,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:23,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:23,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:23,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:23,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:24,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:24,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:24,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:42:24,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 13:42:24,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-29 13:42:24,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 13:42:24,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:42:24,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:42:24,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 13:42:24,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:42:24,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 13:42:24,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:42:25,971 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 13:42:25,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:42:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:42:25,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:25,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:42:26,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:42:26,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:42:26,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 13:42:26,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:42:26,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:42:26,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:42:26,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:42:26,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:42:26,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 13:42:26,019 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 13:42:26,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258778178] [2020-10-29 13:42:26,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:42:26,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:42:26,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71439890] [2020-10-29 13:42:26,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 13:42:26,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:42:26,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 13:42:26,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:42:26,022 INFO L87 Difference]: Start difference. First operand 1227 states and 1710 transitions. Second operand 7 states. [2020-10-29 13:42:27,320 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 317 [2020-10-29 13:42:30,802 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 313 [2020-10-29 13:42:32,196 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification that was a NOOP. DAG size: 315 [2020-10-29 13:42:33,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:42:33,735 INFO L93 Difference]: Finished difference Result 3530 states and 5097 transitions. [2020-10-29 13:42:33,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 13:42:33,735 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2020-10-29 13:42:33,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:42:33,746 INFO L225 Difference]: With dead ends: 3530 [2020-10-29 13:42:33,746 INFO L226 Difference]: Without dead ends: 2704 [2020-10-29 13:42:33,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-29 13:42:33,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2704 states. [2020-10-29 13:42:33,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2704 to 1227. [2020-10-29 13:42:33,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1227 states. [2020-10-29 13:42:33,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1706 transitions. [2020-10-29 13:42:33,978 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1706 transitions. Word has length 60 [2020-10-29 13:42:33,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:42:33,978 INFO L481 AbstractCegarLoop]: Abstraction has 1227 states and 1706 transitions. [2020-10-29 13:42:33,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 13:42:33,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1706 transitions. [2020-10-29 13:42:33,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-29 13:42:33,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:42:33,980 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] [2020-10-29 13:42:33,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:42:33,981 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:42:33,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:42:33,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1443359406, now seen corresponding path program 1 times [2020-10-29 13:42:33,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:42:33,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752026919] [2020-10-29 13:42:33,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:42:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:42:34,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:34,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:34,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:34,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:34,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:34,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:34,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:35,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:35,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:35,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:35,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:35,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:35,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:36,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:36,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:36,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:39,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:42:39,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 13:42:39,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 13:42:39,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 13:42:39,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:42:39,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:42:39,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:42:39,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:42:39,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 13:42:39,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:42:40,334 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 13:42:40,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:42:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:42:40,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:40,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:42:40,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:42:40,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:42:40,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 13:42:40,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:42:40,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:42:40,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:42:40,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:42:40,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:42:40,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:42:40,392 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 13:42:40,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752026919] [2020-10-29 13:42:40,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:42:40,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:42:40,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780304614] [2020-10-29 13:42:40,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:42:40,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:42:40,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:42:40,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:42:40,394 INFO L87 Difference]: Start difference. First operand 1227 states and 1706 transitions. Second operand 9 states. [2020-10-29 13:42:41,610 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 311 [2020-10-29 13:42:45,373 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 314 [2020-10-29 13:42:48,918 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 313 [2020-10-29 13:42:50,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:42:50,962 INFO L93 Difference]: Finished difference Result 8223 states and 11843 transitions. [2020-10-29 13:42:50,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 13:42:50,967 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 60 [2020-10-29 13:42:50,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:42:51,000 INFO L225 Difference]: With dead ends: 8223 [2020-10-29 13:42:51,000 INFO L226 Difference]: Without dead ends: 7435 [2020-10-29 13:42:51,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2020-10-29 13:42:51,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7435 states. [2020-10-29 13:42:51,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7435 to 1239. [2020-10-29 13:42:51,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1239 states. [2020-10-29 13:42:51,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1719 transitions. [2020-10-29 13:42:51,345 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1719 transitions. Word has length 60 [2020-10-29 13:42:51,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:42:51,345 INFO L481 AbstractCegarLoop]: Abstraction has 1239 states and 1719 transitions. [2020-10-29 13:42:51,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:42:51,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1719 transitions. [2020-10-29 13:42:51,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 13:42:51,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:42:51,348 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] [2020-10-29 13:42:51,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:42:51,348 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:42:51,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:42:51,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1930296210, now seen corresponding path program 1 times [2020-10-29 13:42:51,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:42:51,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399400904] [2020-10-29 13:42:51,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:42:51,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:42:51,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:51,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:51,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:51,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:52,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:55,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:42:55,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 13:42:55,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:42:55,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4044 [2020-10-29 13:42:55,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:42:55,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:42:55,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:42:55,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:42:55,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 13:42:55,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:42:56,742 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 13:42:56,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:42:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:42:56,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:56,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:42:56,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:42:56,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:42:56,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 13:42:56,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:42:56,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:42:56,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:42:56,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:42:56,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:42:56,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:42:56,801 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 13:42:56,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399400904] [2020-10-29 13:42:56,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:42:56,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:42:56,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061531745] [2020-10-29 13:42:56,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:42:56,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:42:56,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:42:56,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:42:56,803 INFO L87 Difference]: Start difference. First operand 1239 states and 1719 transitions. Second operand 9 states. [2020-10-29 13:42:58,054 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 314 [2020-10-29 13:43:02,327 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 316 [2020-10-29 13:43:03,658 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 317 [2020-10-29 13:43:05,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:43:05,022 INFO L93 Difference]: Finished difference Result 6985 states and 10271 transitions. [2020-10-29 13:43:05,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 13:43:05,023 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-10-29 13:43:05,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:43:05,035 INFO L225 Difference]: With dead ends: 6985 [2020-10-29 13:43:05,035 INFO L226 Difference]: Without dead ends: 5907 [2020-10-29 13:43:05,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2020-10-29 13:43:05,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5907 states. [2020-10-29 13:43:05,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5907 to 2545. [2020-10-29 13:43:05,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2545 states. [2020-10-29 13:43:05,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2545 states to 2545 states and 3684 transitions. [2020-10-29 13:43:05,582 INFO L78 Accepts]: Start accepts. Automaton has 2545 states and 3684 transitions. Word has length 61 [2020-10-29 13:43:05,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:43:05,582 INFO L481 AbstractCegarLoop]: Abstraction has 2545 states and 3684 transitions. [2020-10-29 13:43:05,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:43:05,582 INFO L276 IsEmpty]: Start isEmpty. Operand 2545 states and 3684 transitions. [2020-10-29 13:43:05,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 13:43:05,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:43:05,587 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] [2020-10-29 13:43:05,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 13:43:05,587 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:43:05,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:43:05,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1298309136, now seen corresponding path program 1 times [2020-10-29 13:43:05,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:43:05,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891586494] [2020-10-29 13:43:05,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:43:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:43:05,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:43:05,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:43:05,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:43:05,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:43:06,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:43:06,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:43:06,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:43:10,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:43:10,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 13:43:10,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:43:10,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 13:43:10,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:43:10,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:43:10,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:43:10,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 13:43:10,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 13:43:10,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:43:11,819 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 13:43:11,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:43:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:43:11,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:43:11,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:43:11,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:43:11,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:43:11,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 13:43:11,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:43:11,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:43:11,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:43:11,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:43:11,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:43:11,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:43:11,887 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 13:43:11,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891586494] [2020-10-29 13:43:11,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:43:11,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:43:11,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704369581] [2020-10-29 13:43:11,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:43:11,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:43:11,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:43:11,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:43:11,889 INFO L87 Difference]: Start difference. First operand 2545 states and 3684 transitions. Second operand 6 states. [2020-10-29 13:43:13,193 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 313 [2020-10-29 13:43:16,657 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 311 [2020-10-29 13:43:17,984 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 309 [2020-10-29 13:43:19,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:43:19,140 INFO L93 Difference]: Finished difference Result 10520 states and 15634 transitions. [2020-10-29 13:43:19,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 13:43:19,141 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-10-29 13:43:19,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:43:19,158 INFO L225 Difference]: With dead ends: 10520 [2020-10-29 13:43:19,158 INFO L226 Difference]: Without dead ends: 8579 [2020-10-29 13:43:19,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-29 13:43:19,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8579 states. [2020-10-29 13:43:20,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8579 to 4638. [2020-10-29 13:43:20,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4638 states. [2020-10-29 13:43:20,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4638 states to 4638 states and 6743 transitions. [2020-10-29 13:43:20,249 INFO L78 Accepts]: Start accepts. Automaton has 4638 states and 6743 transitions. Word has length 72 [2020-10-29 13:43:20,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:43:20,249 INFO L481 AbstractCegarLoop]: Abstraction has 4638 states and 6743 transitions. [2020-10-29 13:43:20,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:43:20,249 INFO L276 IsEmpty]: Start isEmpty. Operand 4638 states and 6743 transitions. [2020-10-29 13:43:20,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-29 13:43:20,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:43:20,255 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] [2020-10-29 13:43:20,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 13:43:20,256 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:43:20,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:43:20,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1176232216, now seen corresponding path program 1 times [2020-10-29 13:43:20,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:43:20,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036985209] [2020-10-29 13:43:20,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:43:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:43:20,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:43:20,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:43:20,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:43:20,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:43:21,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:43:23,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:43:23,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 13:43:23,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:43:23,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2920 [2020-10-29 13:43:23,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:43:23,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:43:23,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:43:23,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:43:23,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 13:43:23,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:43:24,425 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 13:43:24,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:43:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:43:24,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:43:24,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:43:24,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:43:24,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:43:24,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 13:43:24,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:43:24,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:43:24,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:43:24,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:43:24,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:43:24,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:43:24,484 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 13:43:24,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036985209] [2020-10-29 13:43:24,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:43:24,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:43:24,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102565657] [2020-10-29 13:43:24,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:43:24,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:43:24,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:43:24,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:43:24,486 INFO L87 Difference]: Start difference. First operand 4638 states and 6743 transitions. Second operand 6 states. [2020-10-29 13:43:25,747 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 316 [2020-10-29 13:43:28,969 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 314 [2020-10-29 13:43:29,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:43:29,506 INFO L93 Difference]: Finished difference Result 7552 states and 11095 transitions. [2020-10-29 13:43:29,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:43:29,507 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-10-29 13:43:29,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:43:29,514 INFO L225 Difference]: With dead ends: 7552 [2020-10-29 13:43:29,515 INFO L226 Difference]: Without dead ends: 3454 [2020-10-29 13:43:29,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:43:29,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3454 states. [2020-10-29 13:43:30,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3454 to 3451. [2020-10-29 13:43:30,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3451 states. [2020-10-29 13:43:30,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3451 states to 3451 states and 4996 transitions. [2020-10-29 13:43:30,373 INFO L78 Accepts]: Start accepts. Automaton has 3451 states and 4996 transitions. Word has length 73 [2020-10-29 13:43:30,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:43:30,373 INFO L481 AbstractCegarLoop]: Abstraction has 3451 states and 4996 transitions. [2020-10-29 13:43:30,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:43:30,373 INFO L276 IsEmpty]: Start isEmpty. Operand 3451 states and 4996 transitions. [2020-10-29 13:43:30,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-29 13:43:30,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:43:30,378 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] [2020-10-29 13:43:30,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 13:43:30,379 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:43:30,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:43:30,379 INFO L82 PathProgramCache]: Analyzing trace with hash 305281139, now seen corresponding path program 1 times [2020-10-29 13:43:30,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:43:30,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250127000] [2020-10-29 13:43:30,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:43:30,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:43:30,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:43:30,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:43:30,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:43:30,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:43:31,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:43:33,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:43:33,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 13:43:33,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:43:33,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2989 [2020-10-29 13:43:33,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:43:33,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:43:33,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:43:33,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 13:43:33,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 13:43:33,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:43:34,580 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 13:43:34,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:43:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:43:34,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:43:34,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:43:34,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:43:34,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:43:34,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 13:43:34,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:43:34,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:43:34,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:43:34,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:43:34,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:43:34,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:43:34,617 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 13:43:34,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250127000] [2020-10-29 13:43:34,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:43:34,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:43:34,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30611152] [2020-10-29 13:43:34,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:43:34,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:43:34,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:43:34,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:43:34,619 INFO L87 Difference]: Start difference. First operand 3451 states and 4996 transitions. Second operand 6 states. [2020-10-29 13:43:38,193 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 316 [2020-10-29 13:43:39,416 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 318 [2020-10-29 13:43:40,656 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 313 [2020-10-29 13:43:41,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:43:41,961 INFO L93 Difference]: Finished difference Result 11251 states and 16516 transitions. [2020-10-29 13:43:41,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 13:43:41,962 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 74 [2020-10-29 13:43:41,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:43:41,975 INFO L225 Difference]: With dead ends: 11251 [2020-10-29 13:43:41,976 INFO L226 Difference]: Without dead ends: 8163 [2020-10-29 13:43:41,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:43:41,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8163 states. [2020-10-29 13:43:43,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8163 to 7215. [2020-10-29 13:43:43,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7215 states. [2020-10-29 13:43:43,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7215 states to 7215 states and 10483 transitions. [2020-10-29 13:43:43,604 INFO L78 Accepts]: Start accepts. Automaton has 7215 states and 10483 transitions. Word has length 74 [2020-10-29 13:43:43,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:43:43,604 INFO L481 AbstractCegarLoop]: Abstraction has 7215 states and 10483 transitions. [2020-10-29 13:43:43,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:43:43,604 INFO L276 IsEmpty]: Start isEmpty. Operand 7215 states and 10483 transitions. [2020-10-29 13:43:43,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-29 13:43:43,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:43:43,610 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] [2020-10-29 13:43:43,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 13:43:43,610 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:43:43,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:43:43,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1707450612, now seen corresponding path program 1 times [2020-10-29 13:43:43,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:43:43,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418220518] [2020-10-29 13:43:43,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:43:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:43:43,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:43:43,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:43:43,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:43:43,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:43:44,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking...