/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:07:01,483 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:07:01,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:07:01,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:07:01,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:07:01,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:07:01,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:07:01,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:07:01,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:07:01,536 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:07:01,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:07:01,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:07:01,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:07:01,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:07:01,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:07:01,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:07:01,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:07:01,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:07:01,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:07:01,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:07:01,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:07:01,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:07:01,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:07:01,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:07:01,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:07:01,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:07:01,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:07:01,578 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:07:01,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:07:01,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:07:01,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:07:01,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:07:01,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:07:01,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:07:01,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:07:01,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:07:01,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:07:01,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:07:01,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:07:01,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:07:01,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:07:01,602 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 13:07:01,664 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:07:01,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:07:01,668 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:07:01,669 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:07:01,669 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:07:01,669 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:07:01,670 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:07:01,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:07:01,671 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:07:01,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:07:01,672 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:07:01,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:07:01,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:07:01,673 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:07:01,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:07:01,674 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:07:01,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:07:01,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:07:01,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:07:01,675 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:07:01,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:07:01,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:07:01,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:07:01,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:07:01,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:07:01,677 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:07:01,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:07:01,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:07:01,678 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:07:01,678 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:07:02,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:07:02,135 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:07:02,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:07:02,140 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:07:02,140 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:07:02,142 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-29 13:07:02,225 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e8775ccc/ee087fc06040450980948fdc980d01d0/FLAG6103c38a6 [2020-10-29 13:07:03,056 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:07:03,057 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-29 13:07:03,077 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e8775ccc/ee087fc06040450980948fdc980d01d0/FLAG6103c38a6 [2020-10-29 13:07:03,180 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e8775ccc/ee087fc06040450980948fdc980d01d0 [2020-10-29 13:07:03,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:07:03,191 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:07:03,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:07:03,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:07:03,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:07:03,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:07:03" (1/1) ... [2020-10-29 13:07:03,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bc7bee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:07:03, skipping insertion in model container [2020-10-29 13:07:03,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:07:03" (1/1) ... [2020-10-29 13:07:03,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:07:03,339 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:07:05,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:07:05,042 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:07:05,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:07:05,833 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:07:05,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:07:05 WrapperNode [2020-10-29 13:07:05,834 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:07:05,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:07:05,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:07:05,835 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:07:05,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:07:05" (1/1) ... [2020-10-29 13:07:05,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:07:05" (1/1) ... [2020-10-29 13:07:05,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:07:05" (1/1) ... [2020-10-29 13:07:05,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:07:05" (1/1) ... [2020-10-29 13:07:05,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:07:05" (1/1) ... [2020-10-29 13:07:06,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:07:05" (1/1) ... [2020-10-29 13:07:06,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:07:05" (1/1) ... [2020-10-29 13:07:06,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:07:06,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:07:06,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:07:06,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:07:06,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:07:05" (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 13:07:06,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:07:06,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:07:06,126 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:07:06,126 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:07:06,126 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:07:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:07:06,127 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:07:06,127 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:07:06,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:07:06,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:07:06,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:07:06,127 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:07:06,128 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:07:06,128 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:07:06,128 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:07:06,128 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:07:06,128 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:07:06,129 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:07:06,129 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:07:06,129 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:07:06,129 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:07:06,129 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:07:06,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:07:06,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:07:06,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:07:06,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:07:06,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:07:06,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:07:10,006 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:07:10,006 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:07:10,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:07:10 BoogieIcfgContainer [2020-10-29 13:07:10,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:07:10,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:07:10,014 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:07:10,017 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:07:10,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:07:03" (1/3) ... [2020-10-29 13:07:10,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b578b41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:07:10, skipping insertion in model container [2020-10-29 13:07:10,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:07:05" (2/3) ... [2020-10-29 13:07:10,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b578b41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:07:10, skipping insertion in model container [2020-10-29 13:07:10,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:07:10" (3/3) ... [2020-10-29 13:07:10,021 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-29 13:07:10,035 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:07:10,041 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:07:10,057 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:07:10,096 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:07:10,096 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:07:10,096 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:07:10,097 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:07:10,097 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:07:10,097 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:07:10,097 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:07:10,097 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:07:10,142 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states. [2020-10-29 13:07:10,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-29 13:07:10,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:07:10,192 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:07:10,192 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:07:10,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:07:10,207 INFO L82 PathProgramCache]: Analyzing trace with hash -917625237, now seen corresponding path program 1 times [2020-10-29 13:07:10,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:07:10,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100809199] [2020-10-29 13:07:10,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:07:11,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:07:11,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:12,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:13,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:13,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:14,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:14,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:14,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:14,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:15,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:15,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:15,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:15,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:16,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:07:16,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-29 13:07:16,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:07:16,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 13:07:16,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:07:16,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:07:16,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:07:16,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:07:16,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-29 13:07:16,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 13:07:17,753 WARN L193 SmtUtils]: Spent 779.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-29 13:07:17,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:07:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:07:17,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:17,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:07:17,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:07:17,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:07:17,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 13:07:17,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:07:17,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:07:17,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:07:17,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:07:17,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:07:17,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:07:18,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:07:18,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100809199] [2020-10-29 13:07:18,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:07:18,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:07:18,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049144201] [2020-10-29 13:07:18,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:07:18,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:07:18,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:07:18,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:07:18,146 INFO L87 Difference]: Start difference. First operand 914 states. Second operand 5 states. [2020-10-29 13:07:28,368 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-29 13:07:30,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:07:30,654 INFO L93 Difference]: Finished difference Result 2665 states and 4856 transitions. [2020-10-29 13:07:30,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:07:30,657 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 303 [2020-10-29 13:07:30,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:07:30,687 INFO L225 Difference]: With dead ends: 2665 [2020-10-29 13:07:30,687 INFO L226 Difference]: Without dead ends: 1758 [2020-10-29 13:07:30,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:07:30,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1758 states. [2020-10-29 13:07:30,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1758 to 1677. [2020-10-29 13:07:30,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1677 states. [2020-10-29 13:07:30,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1677 states to 1677 states and 2580 transitions. [2020-10-29 13:07:30,902 INFO L78 Accepts]: Start accepts. Automaton has 1677 states and 2580 transitions. Word has length 303 [2020-10-29 13:07:30,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:07:30,903 INFO L481 AbstractCegarLoop]: Abstraction has 1677 states and 2580 transitions. [2020-10-29 13:07:30,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:07:30,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1677 states and 2580 transitions. [2020-10-29 13:07:30,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-29 13:07:30,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:07:30,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:07:30,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:07:30,913 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:07:30,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:07:30,914 INFO L82 PathProgramCache]: Analyzing trace with hash 446512637, now seen corresponding path program 1 times [2020-10-29 13:07:30,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:07:30,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187099324] [2020-10-29 13:07:30,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:07:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:07:31,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:31,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:31,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:31,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:32,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:32,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:32,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:32,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:32,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:32,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:33,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:33,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:33,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:35,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:36,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:36,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:07:36,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-29 13:07:36,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 13:07:36,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5134 [2020-10-29 13:07:36,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:07:36,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:07:36,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:07:36,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 13:07:36,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-29 13:07:36,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:07:36,871 WARN L193 SmtUtils]: Spent 570.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-29 13:07:36,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:07:36,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:07:36,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:36,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:07:36,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:07:36,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:07:36,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 13:07:36,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:07:36,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:07:36,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:07:36,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:07:36,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:07:36,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:07:37,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:07:37,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187099324] [2020-10-29 13:07:37,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:07:37,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:07:37,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044854343] [2020-10-29 13:07:37,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:07:37,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:07:37,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:07:37,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:07:37,155 INFO L87 Difference]: Start difference. First operand 1677 states and 2580 transitions. Second operand 4 states. [2020-10-29 13:07:46,667 WARN L193 SmtUtils]: Spent 611.00 ms on a formula simplification that was a NOOP. DAG size: 351 [2020-10-29 13:07:48,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:07:48,715 INFO L93 Difference]: Finished difference Result 4846 states and 7424 transitions. [2020-10-29 13:07:48,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:07:48,715 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 305 [2020-10-29 13:07:48,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:07:48,735 INFO L225 Difference]: With dead ends: 4846 [2020-10-29 13:07:48,735 INFO L226 Difference]: Without dead ends: 3298 [2020-10-29 13:07:48,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:07:48,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3298 states. [2020-10-29 13:07:48,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3298 to 3217. [2020-10-29 13:07:48,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3217 states. [2020-10-29 13:07:48,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3217 states to 3217 states and 4933 transitions. [2020-10-29 13:07:48,896 INFO L78 Accepts]: Start accepts. Automaton has 3217 states and 4933 transitions. Word has length 305 [2020-10-29 13:07:48,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:07:48,897 INFO L481 AbstractCegarLoop]: Abstraction has 3217 states and 4933 transitions. [2020-10-29 13:07:48,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:07:48,898 INFO L276 IsEmpty]: Start isEmpty. Operand 3217 states and 4933 transitions. [2020-10-29 13:07:48,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-29 13:07:48,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:07:48,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:07:48,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:07:48,909 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:07:48,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:07:48,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1027680600, now seen corresponding path program 1 times [2020-10-29 13:07:48,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:07:48,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415437850] [2020-10-29 13:07:48,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:07:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:07:48,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:49,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:49,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:49,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:49,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:49,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:50,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:50,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:50,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:50,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:50,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:50,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:51,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:52,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:52,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:54,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:07:54,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-29 13:07:54,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 13:07:54,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-29 13:07:54,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:07:54,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:07:54,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:07:54,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:07:54,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 13:07:54,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:07:54,795 WARN L193 SmtUtils]: Spent 575.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-29 13:07:54,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:07:54,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:07:54,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:54,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:07:54,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:07:54,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:07:54,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 13:07:54,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:07:54,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:07:54,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:07:54,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:07:54,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:07:54,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:07:55,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:07:55,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415437850] [2020-10-29 13:07:55,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:07:55,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:07:55,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320833799] [2020-10-29 13:07:55,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:07:55,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:07:55,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:07:55,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:07:55,183 INFO L87 Difference]: Start difference. First operand 3217 states and 4933 transitions. Second operand 5 states. [2020-10-29 13:08:03,130 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-29 13:08:05,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:08:05,237 INFO L93 Difference]: Finished difference Result 9483 states and 14518 transitions. [2020-10-29 13:08:05,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:08:05,239 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 305 [2020-10-29 13:08:05,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:08:05,273 INFO L225 Difference]: With dead ends: 9483 [2020-10-29 13:08:05,273 INFO L226 Difference]: Without dead ends: 6300 [2020-10-29 13:08:05,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:08:05,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6300 states. [2020-10-29 13:08:05,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6300 to 6240. [2020-10-29 13:08:05,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6240 states. [2020-10-29 13:08:05,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6240 states to 6240 states and 9492 transitions. [2020-10-29 13:08:05,584 INFO L78 Accepts]: Start accepts. Automaton has 6240 states and 9492 transitions. Word has length 305 [2020-10-29 13:08:05,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:08:05,585 INFO L481 AbstractCegarLoop]: Abstraction has 6240 states and 9492 transitions. [2020-10-29 13:08:05,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:08:05,585 INFO L276 IsEmpty]: Start isEmpty. Operand 6240 states and 9492 transitions. [2020-10-29 13:08:05,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-29 13:08:05,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:08:05,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:08:05,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:08:05,603 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:08:05,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:08:05,603 INFO L82 PathProgramCache]: Analyzing trace with hash 45553483, now seen corresponding path program 1 times [2020-10-29 13:08:05,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:08:05,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61286310] [2020-10-29 13:08:05,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:08:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:05,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:05,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:05,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:06,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:06,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:06,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:06,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:07,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:07,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:07,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:07,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:07,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:08,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:08,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:08,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:10,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:08:10,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-29 13:08:10,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 13:08:10,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-29 13:08:10,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:08:10,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:08:10,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:08:10,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:08:10,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-29 13:08:10,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:08:11,506 WARN L193 SmtUtils]: Spent 629.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-29 13:08:11,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:08:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:11,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:11,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:08:11,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:08:11,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:08:11,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 13:08:11,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:08:11,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:08:11,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:08:11,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:08:11,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:08:11,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:08:11,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:08:11,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61286310] [2020-10-29 13:08:11,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:08:11,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:08:11,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047583816] [2020-10-29 13:08:11,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:08:11,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:08:11,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:08:11,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:08:11,685 INFO L87 Difference]: Start difference. First operand 6240 states and 9492 transitions. Second operand 5 states. [2020-10-29 13:08:19,447 WARN L193 SmtUtils]: Spent 642.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-29 13:08:21,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:08:21,678 INFO L93 Difference]: Finished difference Result 18106 states and 27408 transitions. [2020-10-29 13:08:21,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:08:21,679 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 307 [2020-10-29 13:08:21,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:08:21,736 INFO L225 Difference]: With dead ends: 18106 [2020-10-29 13:08:21,736 INFO L226 Difference]: Without dead ends: 12148 [2020-10-29 13:08:21,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:08:21,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12148 states. [2020-10-29 13:08:22,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12148 to 12064. [2020-10-29 13:08:22,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12064 states. [2020-10-29 13:08:22,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12064 states to 12064 states and 18176 transitions. [2020-10-29 13:08:22,288 INFO L78 Accepts]: Start accepts. Automaton has 12064 states and 18176 transitions. Word has length 307 [2020-10-29 13:08:22,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:08:22,289 INFO L481 AbstractCegarLoop]: Abstraction has 12064 states and 18176 transitions. [2020-10-29 13:08:22,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:08:22,289 INFO L276 IsEmpty]: Start isEmpty. Operand 12064 states and 18176 transitions. [2020-10-29 13:08:22,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-29 13:08:22,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:08:22,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:08:22,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:08:22,317 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:08:22,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:08:22,318 INFO L82 PathProgramCache]: Analyzing trace with hash 799807326, now seen corresponding path program 1 times [2020-10-29 13:08:22,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:08:22,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050462783] [2020-10-29 13:08:22,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:08:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:22,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:22,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:22,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:22,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:22,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:22,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:23,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:23,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:24,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:24,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:24,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:24,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:24,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:25,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:25,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:25,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:27,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:08:27,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-29 13:08:27,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 13:08:27,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-29 13:08:27,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:08:27,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:08:27,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:08:27,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-29 13:08:27,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-29 13:08:27,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:08:28,136 WARN L193 SmtUtils]: Spent 587.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-29 13:08:28,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:08:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:28,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:28,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:08:28,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:08:28,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:08:28,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 13:08:28,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:08:28,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:08:28,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:08:28,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:08:28,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:08:28,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:08:28,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:08:28,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050462783] [2020-10-29 13:08:28,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:08:28,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:08:28,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865536272] [2020-10-29 13:08:28,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:08:28,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:08:28,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:08:28,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:08:28,362 INFO L87 Difference]: Start difference. First operand 12064 states and 18176 transitions. Second operand 4 states. [2020-10-29 13:08:37,040 WARN L193 SmtUtils]: Spent 723.00 ms on a formula simplification that was a NOOP. DAG size: 351 [2020-10-29 13:08:39,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:08:39,081 INFO L93 Difference]: Finished difference Result 34580 states and 51784 transitions. [2020-10-29 13:08:39,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:08:39,082 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 309 [2020-10-29 13:08:39,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:08:39,146 INFO L225 Difference]: With dead ends: 34580 [2020-10-29 13:08:39,146 INFO L226 Difference]: Without dead ends: 23438 [2020-10-29 13:08:39,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:08:39,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23438 states. [2020-10-29 13:08:40,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23438 to 23340. [2020-10-29 13:08:40,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23340 states. [2020-10-29 13:08:40,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23340 states to 23340 states and 34846 transitions. [2020-10-29 13:08:40,079 INFO L78 Accepts]: Start accepts. Automaton has 23340 states and 34846 transitions. Word has length 309 [2020-10-29 13:08:40,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:08:40,079 INFO L481 AbstractCegarLoop]: Abstraction has 23340 states and 34846 transitions. [2020-10-29 13:08:40,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:08:40,079 INFO L276 IsEmpty]: Start isEmpty. Operand 23340 states and 34846 transitions. [2020-10-29 13:08:40,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-29 13:08:40,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:08:40,130 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:08:40,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:08:40,130 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:08:40,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:08:40,131 INFO L82 PathProgramCache]: Analyzing trace with hash -636028679, now seen corresponding path program 1 times [2020-10-29 13:08:40,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:08:40,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39116327] [2020-10-29 13:08:40,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:08:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:40,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:40,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:40,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:40,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:40,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:40,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:40,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:42,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:43,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:43,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:43,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:43,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:43,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:43,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:44,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:44,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:45,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:08:45,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-29 13:08:45,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 13:08:45,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-29 13:08:45,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:08:45,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:08:45,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:08:45,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:08:45,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-29 13:08:45,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:08:46,031 WARN L193 SmtUtils]: Spent 630.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-29 13:08:46,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:08:46,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:46,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:46,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:08:46,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:08:46,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:08:46,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 13:08:46,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:08:46,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:08:46,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:08:46,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:08:46,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:08:46,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:08:46,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:08:46,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39116327] [2020-10-29 13:08:46,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:08:46,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:08:46,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903430858] [2020-10-29 13:08:46,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:08:46,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:08:46,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:08:46,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:08:46,221 INFO L87 Difference]: Start difference. First operand 23340 states and 34846 transitions. Second operand 5 states. [2020-10-29 13:08:54,895 WARN L193 SmtUtils]: Spent 664.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-29 13:08:57,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:08:57,315 INFO L93 Difference]: Finished difference Result 68328 states and 101726 transitions. [2020-10-29 13:08:57,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:08:57,320 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 309 [2020-10-29 13:08:57,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:08:57,417 INFO L225 Difference]: With dead ends: 68328 [2020-10-29 13:08:57,417 INFO L226 Difference]: Without dead ends: 45230 [2020-10-29 13:08:57,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:08:57,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45230 states. [2020-10-29 13:08:59,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45230 to 45112. [2020-10-29 13:08:59,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45112 states. [2020-10-29 13:08:59,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45112 states to 45112 states and 66702 transitions. [2020-10-29 13:08:59,224 INFO L78 Accepts]: Start accepts. Automaton has 45112 states and 66702 transitions. Word has length 309 [2020-10-29 13:08:59,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:08:59,225 INFO L481 AbstractCegarLoop]: Abstraction has 45112 states and 66702 transitions. [2020-10-29 13:08:59,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:08:59,225 INFO L276 IsEmpty]: Start isEmpty. Operand 45112 states and 66702 transitions. [2020-10-29 13:08:59,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-29 13:08:59,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:08:59,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:08:59,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:08:59,299 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:08:59,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:08:59,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1857153844, now seen corresponding path program 1 times [2020-10-29 13:08:59,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:08:59,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464527989] [2020-10-29 13:08:59,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:08:59,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:59,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:59,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:59,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:59,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:59,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:59,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:59,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:00,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:00,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:00,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:00,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:00,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:00,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:00,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:01,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:01,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:04,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:09:04,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-29 13:09:04,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 13:09:04,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-29 13:09:04,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:09:04,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:09:04,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:09:04,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:09:04,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 13:09:04,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:09:05,140 WARN L193 SmtUtils]: Spent 606.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-29 13:09:05,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:09:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:09:05,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:05,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:09:05,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:09:05,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:09:05,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 13:09:05,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:09:05,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:09:05,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:09:05,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:09:05,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:09:05,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:09:05,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:09:05,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464527989] [2020-10-29 13:09:05,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:09:05,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:09:05,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109530378] [2020-10-29 13:09:05,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:09:05,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:09:05,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:09:05,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:09:05,285 INFO L87 Difference]: Start difference. First operand 45112 states and 66702 transitions. Second operand 5 states. [2020-10-29 13:09:15,099 WARN L193 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-29 13:09:17,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:09:17,793 INFO L93 Difference]: Finished difference Result 132936 states and 196186 transitions. [2020-10-29 13:09:17,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:09:17,794 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 311 [2020-10-29 13:09:17,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:09:17,972 INFO L225 Difference]: With dead ends: 132936 [2020-10-29 13:09:17,972 INFO L226 Difference]: Without dead ends: 88406 [2020-10-29 13:09:18,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:09:18,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88406 states. [2020-10-29 13:09:22,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88406 to 88288. [2020-10-29 13:09:22,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88288 states. [2020-10-29 13:09:22,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88288 states to 88288 states and 129462 transitions. [2020-10-29 13:09:22,231 INFO L78 Accepts]: Start accepts. Automaton has 88288 states and 129462 transitions. Word has length 311 [2020-10-29 13:09:22,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:09:22,231 INFO L481 AbstractCegarLoop]: Abstraction has 88288 states and 129462 transitions. [2020-10-29 13:09:22,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:09:22,231 INFO L276 IsEmpty]: Start isEmpty. Operand 88288 states and 129462 transitions. [2020-10-29 13:09:22,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-29 13:09:22,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:09:22,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:09:22,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:09:22,504 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:09:22,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:09:22,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1564930418, now seen corresponding path program 1 times [2020-10-29 13:09:22,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:09:22,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110510258] [2020-10-29 13:09:22,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:09:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:09:22,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:22,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:22,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:22,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:22,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:22,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:22,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:22,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:22,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:23,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:23,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:23,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:25,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:27,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:09:27,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-29 13:09:27,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:09:27,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 13:09:27,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:09:27,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:09:27,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:09:27,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:09:27,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-29 13:09:27,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:09:28,323 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-29 13:09:28,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:09:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:09:28,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:28,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:09:28,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:09:28,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:09:28,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 13:09:28,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:09:28,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:09:28,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:09:28,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:09:28,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:09:28,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:09:28,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:09:28,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110510258] [2020-10-29 13:09:28,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:09:28,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:09:28,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894853941] [2020-10-29 13:09:28,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:09:28,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:09:28,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:09:28,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:09:28,572 INFO L87 Difference]: Start difference. First operand 88288 states and 129462 transitions. Second operand 5 states. [2020-10-29 13:09:43,841 WARN L193 SmtUtils]: Spent 672.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-29 13:09:48,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:09:48,306 INFO L93 Difference]: Finished difference Result 258922 states and 378580 transitions. [2020-10-29 13:09:48,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:09:48,307 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 313 [2020-10-29 13:09:48,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:09:48,919 INFO L225 Difference]: With dead ends: 258922 [2020-10-29 13:09:48,919 INFO L226 Difference]: Without dead ends: 172996 [2020-10-29 13:09:49,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:09:49,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172996 states. [2020-10-29 13:09:57,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172996 to 172952. [2020-10-29 13:09:57,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172952 states. [2020-10-29 13:09:57,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172952 states to 172952 states and 251260 transitions. [2020-10-29 13:09:57,729 INFO L78 Accepts]: Start accepts. Automaton has 172952 states and 251260 transitions. Word has length 313 [2020-10-29 13:09:57,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:09:57,730 INFO L481 AbstractCegarLoop]: Abstraction has 172952 states and 251260 transitions. [2020-10-29 13:09:57,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:09:57,730 INFO L276 IsEmpty]: Start isEmpty. Operand 172952 states and 251260 transitions. [2020-10-29 13:09:58,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-29 13:09:58,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:09:58,128 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:09:58,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:09:58,128 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:09:58,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:09:58,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1767000083, now seen corresponding path program 1 times [2020-10-29 13:09:58,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:09:58,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386998809] [2020-10-29 13:09:58,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:09:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:09:58,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:58,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:58,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:58,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:58,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:58,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:58,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:58,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:58,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:59,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:59,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:59,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:02,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:02,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:02,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:03,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:10:03,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-29 13:10:03,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 13:10:03,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-29 13:10:03,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:10:03,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:10:03,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:10:03,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:10:03,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 13:10:03,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:10:04,040 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-29 13:10:04,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:10:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:10:04,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:04,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:10:04,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:10:04,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:10:04,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 13:10:04,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:10:04,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:10:04,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:10:04,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:10:04,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:10:04,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:10:04,230 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 13:10:04,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386998809] [2020-10-29 13:10:04,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:10:04,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:10:04,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842677085] [2020-10-29 13:10:04,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:10:04,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:10:04,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:10:04,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:10:04,232 INFO L87 Difference]: Start difference. First operand 172952 states and 251260 transitions. Second operand 5 states. [2020-10-29 13:10:19,956 WARN L193 SmtUtils]: Spent 645.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-29 13:10:24,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:10:24,523 INFO L93 Difference]: Finished difference Result 363155 states and 527794 transitions. [2020-10-29 13:10:24,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:10:24,523 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 315 [2020-10-29 13:10:24,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:10:25,001 INFO L225 Difference]: With dead ends: 363155 [2020-10-29 13:10:25,001 INFO L226 Difference]: Without dead ends: 190223 [2020-10-29 13:10:25,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:10:25,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190223 states. [2020-10-29 13:10:33,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190223 to 173273. [2020-10-29 13:10:33,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173273 states. [2020-10-29 13:10:34,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173273 states to 173273 states and 251801 transitions. [2020-10-29 13:10:34,385 INFO L78 Accepts]: Start accepts. Automaton has 173273 states and 251801 transitions. Word has length 315 [2020-10-29 13:10:34,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:10:34,385 INFO L481 AbstractCegarLoop]: Abstraction has 173273 states and 251801 transitions. [2020-10-29 13:10:34,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:10:34,386 INFO L276 IsEmpty]: Start isEmpty. Operand 173273 states and 251801 transitions. [2020-10-29 13:10:34,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-29 13:10:34,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:10:34,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:10:34,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:10:34,532 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:10:34,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:10:34,532 INFO L82 PathProgramCache]: Analyzing trace with hash 572641315, now seen corresponding path program 1 times [2020-10-29 13:10:34,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:10:34,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833878702] [2020-10-29 13:10:34,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:10:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:10:34,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking...