/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/systemc/mem_slave_tlm.5.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 14:33:38,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 14:33:38,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 14:33:38,720 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 14:33:38,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 14:33:38,727 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 14:33:38,730 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 14:33:38,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 14:33:38,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 14:33:38,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 14:33:38,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 14:33:38,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 14:33:38,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 14:33:38,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 14:33:38,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 14:33:38,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 14:33:38,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 14:33:38,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 14:33:38,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 14:33:38,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 14:33:38,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 14:33:38,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 14:33:38,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 14:33:38,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 14:33:38,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 14:33:38,795 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 14:33:38,797 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 14:33:38,799 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 14:33:38,799 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 14:33:38,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 14:33:38,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 14:33:38,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 14:33:38,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 14:33:38,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 14:33:38,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 14:33:38,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 14:33:38,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 14:33:38,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 14:33:38,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 14:33:38,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 14:33:38,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 14:33:38,819 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 14:33:38,878 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 14:33:38,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 14:33:38,880 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 14:33:38,880 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 14:33:38,881 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 14:33:38,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 14:33:38,881 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 14:33:38,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 14:33:38,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 14:33:38,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 14:33:38,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 14:33:38,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 14:33:38,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 14:33:38,883 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 14:33:38,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 14:33:38,883 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 14:33:38,883 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 14:33:38,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 14:33:38,884 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 14:33:38,884 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 14:33:38,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 14:33:38,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:33:38,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 14:33:38,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 14:33:38,885 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 14:33:38,885 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 14:33:38,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 14:33:38,885 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 14:33:38,886 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 14:33:38,886 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 14:33:39,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 14:33:39,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 14:33:39,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 14:33:39,304 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 14:33:39,305 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 14:33:39,306 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/mem_slave_tlm.5.cil.c [2020-10-29 14:33:39,388 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/897a9cfbe/1a90e586d2594f8daf036817b2d699cc/FLAGa2a501902 [2020-10-29 14:33:40,193 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 14:33:40,194 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/mem_slave_tlm.5.cil.c [2020-10-29 14:33:40,212 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/897a9cfbe/1a90e586d2594f8daf036817b2d699cc/FLAGa2a501902 [2020-10-29 14:33:40,504 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/897a9cfbe/1a90e586d2594f8daf036817b2d699cc [2020-10-29 14:33:40,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 14:33:40,521 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 14:33:40,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 14:33:40,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 14:33:40,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 14:33:40,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:33:40" (1/1) ... [2020-10-29 14:33:40,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d55b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:40, skipping insertion in model container [2020-10-29 14:33:40,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:33:40" (1/1) ... [2020-10-29 14:33:40,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 14:33:40,595 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 14:33:41,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:33:41,034 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 14:33:41,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:33:41,189 INFO L208 MainTranslator]: Completed translation [2020-10-29 14:33:41,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:41 WrapperNode [2020-10-29 14:33:41,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 14:33:41,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 14:33:41,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 14:33:41,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 14:33:41,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:41" (1/1) ... [2020-10-29 14:33:41,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:41" (1/1) ... [2020-10-29 14:33:41,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:41" (1/1) ... [2020-10-29 14:33:41,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:41" (1/1) ... [2020-10-29 14:33:41,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:41" (1/1) ... [2020-10-29 14:33:41,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:41" (1/1) ... [2020-10-29 14:33:41,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:41" (1/1) ... [2020-10-29 14:33:41,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 14:33:41,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 14:33:41,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 14:33:41,292 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 14:33:41,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:41" (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 14:33:41,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 14:33:41,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 14:33:41,421 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 14:33:41,421 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-29 14:33:41,422 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_read [2020-10-29 14:33:41,422 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_write [2020-10-29 14:33:41,423 INFO L138 BoogieDeclarations]: Found implementation of procedure m_run [2020-10-29 14:33:41,423 INFO L138 BoogieDeclarations]: Found implementation of procedure s_run [2020-10-29 14:33:41,423 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-29 14:33:41,423 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-29 14:33:41,424 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 14:33:41,425 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 14:33:41,425 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 14:33:41,425 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 14:33:41,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 14:33:41,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 14:33:41,426 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-29 14:33:41,427 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_read [2020-10-29 14:33:41,427 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_write [2020-10-29 14:33:41,427 INFO L130 BoogieDeclarations]: Found specification of procedure m_run [2020-10-29 14:33:41,427 INFO L130 BoogieDeclarations]: Found specification of procedure s_run [2020-10-29 14:33:41,427 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-29 14:33:41,427 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-29 14:33:41,428 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 14:33:41,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 14:33:41,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 14:33:41,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 14:33:41,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 14:33:41,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 14:33:41,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 14:33:42,725 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 14:33:42,725 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-10-29 14:33:42,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:33:42 BoogieIcfgContainer [2020-10-29 14:33:42,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 14:33:42,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 14:33:42,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 14:33:42,734 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 14:33:42,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 02:33:40" (1/3) ... [2020-10-29 14:33:42,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb2029a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:33:42, skipping insertion in model container [2020-10-29 14:33:42,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:41" (2/3) ... [2020-10-29 14:33:42,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb2029a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:33:42, skipping insertion in model container [2020-10-29 14:33:42,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:33:42" (3/3) ... [2020-10-29 14:33:42,737 INFO L111 eAbstractionObserver]: Analyzing ICFG mem_slave_tlm.5.cil.c [2020-10-29 14:33:42,750 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 14:33:42,758 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 14:33:42,771 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 14:33:42,804 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 14:33:42,804 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 14:33:42,805 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 14:33:42,805 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 14:33:42,805 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 14:33:42,805 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 14:33:42,805 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 14:33:42,805 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 14:33:42,834 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states. [2020-10-29 14:33:42,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 14:33:42,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:33:42,848 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] [2020-10-29 14:33:42,848 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:33:42,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:33:42,855 INFO L82 PathProgramCache]: Analyzing trace with hash -635908971, now seen corresponding path program 1 times [2020-10-29 14:33:42,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:33:42,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294665593] [2020-10-29 14:33:42,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:33:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:33:43,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:43,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:43,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:43,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:44,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:44,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:44,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:45,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:45,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:45,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:45,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:46,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:46,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:46,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:48,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:33:48,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 14:33:48,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 14:33:48,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 14:33:48,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:33:48,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:33:48,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:33:48,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 14:33:48,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 14:33:48,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 14:33:48,688 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 14:33:48,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:33:48,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:33:48,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:48,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:33:48,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:33:48,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:33:48,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 14:33:48,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:33:48,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:33:48,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:33:48,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:33:48,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:33:48,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:33:48,740 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 14:33:48,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294665593] [2020-10-29 14:33:48,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:33:48,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:33:48,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721302765] [2020-10-29 14:33:48,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:33:48,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:33:48,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:33:48,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:33:48,771 INFO L87 Difference]: Start difference. First operand 310 states. Second operand 4 states. [2020-10-29 14:33:49,136 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-29 14:33:51,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:33:51,812 INFO L93 Difference]: Finished difference Result 947 states and 1691 transitions. [2020-10-29 14:33:51,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:33:51,818 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-29 14:33:51,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:33:51,840 INFO L225 Difference]: With dead ends: 947 [2020-10-29 14:33:51,841 INFO L226 Difference]: Without dead ends: 646 [2020-10-29 14:33:51,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:33:51,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2020-10-29 14:33:52,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 564. [2020-10-29 14:33:52,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 564 states. [2020-10-29 14:33:52,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 942 transitions. [2020-10-29 14:33:52,033 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 942 transitions. Word has length 40 [2020-10-29 14:33:52,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:33:52,034 INFO L481 AbstractCegarLoop]: Abstraction has 564 states and 942 transitions. [2020-10-29 14:33:52,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:33:52,035 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 942 transitions. [2020-10-29 14:33:52,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 14:33:52,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:33:52,051 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] [2020-10-29 14:33:52,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 14:33:52,052 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:33:52,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:33:52,053 INFO L82 PathProgramCache]: Analyzing trace with hash -817713203, now seen corresponding path program 1 times [2020-10-29 14:33:52,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:33:52,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211232848] [2020-10-29 14:33:52,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:33:52,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:33:52,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:52,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:52,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:52,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:52,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:52,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:52,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:53,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:53,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:53,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:53,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:54,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:33:54,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 14:33:54,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 14:33:54,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2885 [2020-10-29 14:33:54,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:33:54,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:33:54,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 14:33:54,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:33:54,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 14:33:54,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:33:55,354 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 14:33:55,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:33:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:33:55,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:55,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:33:55,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:33:55,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:33:55,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 14:33:55,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:33:55,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:33:55,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:33:55,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:33:55,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:33:55,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:33:55,395 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 14:33:55,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211232848] [2020-10-29 14:33:55,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:33:55,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:33:55,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244045873] [2020-10-29 14:33:55,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:33:55,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:33:55,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:33:55,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:33:55,399 INFO L87 Difference]: Start difference. First operand 564 states and 942 transitions. Second operand 4 states. [2020-10-29 14:33:55,685 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-29 14:33:57,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:33:57,683 INFO L93 Difference]: Finished difference Result 1550 states and 2554 transitions. [2020-10-29 14:33:57,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:33:57,684 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-29 14:33:57,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:33:57,694 INFO L225 Difference]: With dead ends: 1550 [2020-10-29 14:33:57,695 INFO L226 Difference]: Without dead ends: 1011 [2020-10-29 14:33:57,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:33:57,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-10-29 14:33:57,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 909. [2020-10-29 14:33:57,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 909 states. [2020-10-29 14:33:57,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1506 transitions. [2020-10-29 14:33:57,822 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1506 transitions. Word has length 41 [2020-10-29 14:33:57,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:33:57,823 INFO L481 AbstractCegarLoop]: Abstraction has 909 states and 1506 transitions. [2020-10-29 14:33:57,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:33:57,823 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1506 transitions. [2020-10-29 14:33:57,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 14:33:57,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:33:57,826 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] [2020-10-29 14:33:57,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 14:33:57,827 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:33:57,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:33:57,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1075135430, now seen corresponding path program 1 times [2020-10-29 14:33:57,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:33:57,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601657348] [2020-10-29 14:33:57,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:33:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:33:57,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:57,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:58,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:58,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:58,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:58,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:58,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:58,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:02,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:02,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 14:34:02,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:34:02,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 14:34:02,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:02,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:02,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 14:34:02,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:34:02,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 14:34:02,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:03,281 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 14:34:03,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:34:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:03,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:03,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:03,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:34:03,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:03,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 14:34:03,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:03,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:03,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:34:03,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:34:03,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:34:03,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 14:34:03,343 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 14:34:03,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601657348] [2020-10-29 14:34:03,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:34:03,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 14:34:03,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110453913] [2020-10-29 14:34:03,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 14:34:03,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:34:03,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 14:34:03,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:34:03,348 INFO L87 Difference]: Start difference. First operand 909 states and 1506 transitions. Second operand 7 states. [2020-10-29 14:34:03,625 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-29 14:34:05,003 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-29 14:34:05,371 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-29 14:34:06,464 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 14:34:07,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:34:07,223 INFO L93 Difference]: Finished difference Result 2733 states and 4462 transitions. [2020-10-29 14:34:07,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 14:34:07,224 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2020-10-29 14:34:07,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:34:07,241 INFO L225 Difference]: With dead ends: 2733 [2020-10-29 14:34:07,242 INFO L226 Difference]: Without dead ends: 1849 [2020-10-29 14:34:07,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-29 14:34:07,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2020-10-29 14:34:07,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1638. [2020-10-29 14:34:07,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1638 states. [2020-10-29 14:34:07,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1638 states to 1638 states and 2704 transitions. [2020-10-29 14:34:07,448 INFO L78 Accepts]: Start accepts. Automaton has 1638 states and 2704 transitions. Word has length 46 [2020-10-29 14:34:07,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:34:07,448 INFO L481 AbstractCegarLoop]: Abstraction has 1638 states and 2704 transitions. [2020-10-29 14:34:07,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 14:34:07,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1638 states and 2704 transitions. [2020-10-29 14:34:07,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 14:34:07,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:34:07,452 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] [2020-10-29 14:34:07,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 14:34:07,452 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:34:07,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:34:07,453 INFO L82 PathProgramCache]: Analyzing trace with hash 449334508, now seen corresponding path program 1 times [2020-10-29 14:34:07,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:34:07,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364289291] [2020-10-29 14:34:07,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:34:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:07,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:07,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:07,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:07,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:07,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:07,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:07,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:07,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:08,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:09,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:12,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:12,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 14:34:12,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 14:34:12,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 14:34:12,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:12,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:12,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 14:34:12,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:34:12,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 14:34:12,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:34:12,797 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 14:34:12,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:34:12,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:12,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:12,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:12,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:34:12,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:12,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 14:34:12,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:12,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:12,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:34:12,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:34:12,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:34:12,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:12,848 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 14:34:12,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364289291] [2020-10-29 14:34:12,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:34:12,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:34:12,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876000184] [2020-10-29 14:34:12,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:34:12,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:34:12,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:34:12,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:34:12,851 INFO L87 Difference]: Start difference. First operand 1638 states and 2704 transitions. Second operand 5 states. [2020-10-29 14:34:13,115 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-29 14:34:15,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:34:15,551 INFO L93 Difference]: Finished difference Result 3465 states and 5690 transitions. [2020-10-29 14:34:15,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:34:15,552 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-10-29 14:34:15,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:34:15,570 INFO L225 Difference]: With dead ends: 3465 [2020-10-29 14:34:15,571 INFO L226 Difference]: Without dead ends: 1852 [2020-10-29 14:34:15,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:34:15,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2020-10-29 14:34:15,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1598. [2020-10-29 14:34:15,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1598 states. [2020-10-29 14:34:15,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 2640 transitions. [2020-10-29 14:34:15,800 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 2640 transitions. Word has length 47 [2020-10-29 14:34:15,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:34:15,801 INFO L481 AbstractCegarLoop]: Abstraction has 1598 states and 2640 transitions. [2020-10-29 14:34:15,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:34:15,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 2640 transitions. [2020-10-29 14:34:15,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 14:34:15,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:34:15,806 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:34:15,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 14:34:15,807 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:34:15,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:34:15,807 INFO L82 PathProgramCache]: Analyzing trace with hash 69490939, now seen corresponding path program 1 times [2020-10-29 14:34:15,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:34:15,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352960390] [2020-10-29 14:34:15,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:34:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:15,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:15,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:15,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:15,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:16,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:16,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:16,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:16,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:16,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:18,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:18,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:18,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:18,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:19,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:19,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:19,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:19,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:20,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:20,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:20,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 14:34:20,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-29 14:34:20,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 14:34:20,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:20,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:20,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:34:20,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 14:34:20,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 14:34:20,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:21,146 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 14:34:21,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:34:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:21,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:21,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:21,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:34:21,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:21,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 14:34:21,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:21,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:21,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:34:21,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:34:21,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:34:21,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:21,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 14:34:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:21,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:21,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:21,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:21,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:21,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 14:34:21,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 14:34:21,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 14:34:21,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:21,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:21,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:34:21,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:34:21,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 14:34:21,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:21,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 14:34:21,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352960390] [2020-10-29 14:34:21,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:34:21,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:34:21,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227689104] [2020-10-29 14:34:21,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:34:21,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:34:21,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:34:21,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:34:21,288 INFO L87 Difference]: Start difference. First operand 1598 states and 2640 transitions. Second operand 5 states. [2020-10-29 14:34:21,545 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-29 14:34:24,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:34:24,604 INFO L93 Difference]: Finished difference Result 4693 states and 7895 transitions. [2020-10-29 14:34:24,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:34:24,605 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-29 14:34:24,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:34:24,632 INFO L225 Difference]: With dead ends: 4693 [2020-10-29 14:34:24,632 INFO L226 Difference]: Without dead ends: 3108 [2020-10-29 14:34:24,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:34:24,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3108 states. [2020-10-29 14:34:24,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3108 to 2766. [2020-10-29 14:34:24,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2766 states. [2020-10-29 14:34:25,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2766 states to 2766 states and 4427 transitions. [2020-10-29 14:34:25,037 INFO L78 Accepts]: Start accepts. Automaton has 2766 states and 4427 transitions. Word has length 65 [2020-10-29 14:34:25,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:34:25,040 INFO L481 AbstractCegarLoop]: Abstraction has 2766 states and 4427 transitions. [2020-10-29 14:34:25,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:34:25,040 INFO L276 IsEmpty]: Start isEmpty. Operand 2766 states and 4427 transitions. [2020-10-29 14:34:25,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 14:34:25,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:34:25,048 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] [2020-10-29 14:34:25,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 14:34:25,049 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:34:25,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:34:25,049 INFO L82 PathProgramCache]: Analyzing trace with hash -717580729, now seen corresponding path program 1 times [2020-10-29 14:34:25,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:34:25,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145059924] [2020-10-29 14:34:25,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:34:25,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:25,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:25,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:25,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:25,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:25,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:25,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:26,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:26,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:26,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:28,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:28,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 14:34:28,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:34:28,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3888 [2020-10-29 14:34:28,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:28,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:28,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 14:34:28,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:34:28,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 14:34:28,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:29,245 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 14:34:29,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:34:29,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:29,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:29,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:29,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:34:29,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:29,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 14:34:29,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:29,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:29,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:34:29,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:34:29,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:34:29,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:29,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 14:34:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:29,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:29,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:29,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:29,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 14:34:29,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:34:29,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 14:34:29,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:29,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:29,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:34:29,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:34:29,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 14:34:29,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:29,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:34:29,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145059924] [2020-10-29 14:34:29,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:34:29,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 14:34:29,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641624129] [2020-10-29 14:34:29,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 14:34:29,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:34:29,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 14:34:29,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:34:29,468 INFO L87 Difference]: Start difference. First operand 2766 states and 4427 transitions. Second operand 7 states. [2020-10-29 14:34:29,734 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-29 14:34:31,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:34:31,833 INFO L93 Difference]: Finished difference Result 6353 states and 11369 transitions. [2020-10-29 14:34:31,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:34:31,834 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-10-29 14:34:31,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:34:31,868 INFO L225 Difference]: With dead ends: 6353 [2020-10-29 14:34:31,868 INFO L226 Difference]: Without dead ends: 3604 [2020-10-29 14:34:31,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-29 14:34:31,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3604 states. [2020-10-29 14:34:32,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3604 to 2994. [2020-10-29 14:34:32,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2994 states. [2020-10-29 14:34:32,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2994 states to 2994 states and 4670 transitions. [2020-10-29 14:34:32,375 INFO L78 Accepts]: Start accepts. Automaton has 2994 states and 4670 transitions. Word has length 68 [2020-10-29 14:34:32,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:34:32,375 INFO L481 AbstractCegarLoop]: Abstraction has 2994 states and 4670 transitions. [2020-10-29 14:34:32,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 14:34:32,375 INFO L276 IsEmpty]: Start isEmpty. Operand 2994 states and 4670 transitions. [2020-10-29 14:34:32,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-29 14:34:32,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:34:32,383 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] [2020-10-29 14:34:32,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 14:34:32,383 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:34:32,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:34:32,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1588639815, now seen corresponding path program 1 times [2020-10-29 14:34:32,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:34:32,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163412696] [2020-10-29 14:34:32,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:34:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:32,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:32,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:32,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:32,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:32,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:33,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:35,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:35,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 14:34:35,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:34:35,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3466 [2020-10-29 14:34:35,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:35,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:35,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 14:34:35,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:34:35,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 14:34:35,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:36,204 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 14:34:36,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:34:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:36,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:36,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:36,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:34:36,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:36,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 14:34:36,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:36,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:36,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:34:36,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:34:36,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:34:36,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:36,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 14:34:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:36,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:36,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:36,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:36,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 14:34:36,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:34:36,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 14:34:36,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:36,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:36,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:34:36,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:34:36,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 14:34:36,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:36,523 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 14:34:36,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163412696] [2020-10-29 14:34:36,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:34:36,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 14:34:36,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259065155] [2020-10-29 14:34:36,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 14:34:36,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:34:36,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 14:34:36,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-29 14:34:36,526 INFO L87 Difference]: Start difference. First operand 2994 states and 4670 transitions. Second operand 12 states. [2020-10-29 14:34:36,858 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 14:34:37,806 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 171 [2020-10-29 14:34:38,750 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-29 14:34:39,217 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-29 14:34:39,532 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-29 14:34:39,956 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-29 14:34:41,293 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-29 14:34:41,667 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-29 14:34:41,957 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-29 14:34:42,632 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-29 14:34:43,563 WARN L193 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 170 [2020-10-29 14:34:44,731 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 14:34:45,492 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-29 14:34:47,333 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-29 14:34:48,864 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-29 14:34:49,472 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 14:34:50,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:34:50,306 INFO L93 Difference]: Finished difference Result 13956 states and 24205 transitions. [2020-10-29 14:34:50,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-29 14:34:50,307 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 77 [2020-10-29 14:34:50,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:34:50,417 INFO L225 Difference]: With dead ends: 13956 [2020-10-29 14:34:50,417 INFO L226 Difference]: Without dead ends: 12248 [2020-10-29 14:34:50,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=418, Invalid=1652, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 14:34:50,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12248 states. [2020-10-29 14:34:52,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12248 to 10758. [2020-10-29 14:34:52,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10758 states. [2020-10-29 14:34:52,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10758 states to 10758 states and 18778 transitions. [2020-10-29 14:34:52,191 INFO L78 Accepts]: Start accepts. Automaton has 10758 states and 18778 transitions. Word has length 77 [2020-10-29 14:34:52,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:34:52,191 INFO L481 AbstractCegarLoop]: Abstraction has 10758 states and 18778 transitions. [2020-10-29 14:34:52,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 14:34:52,191 INFO L276 IsEmpty]: Start isEmpty. Operand 10758 states and 18778 transitions. [2020-10-29 14:34:52,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-29 14:34:52,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:34:52,205 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] [2020-10-29 14:34:52,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 14:34:52,205 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:34:52,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:34:52,211 INFO L82 PathProgramCache]: Analyzing trace with hash -523319463, now seen corresponding path program 1 times [2020-10-29 14:34:52,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:34:52,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395117865] [2020-10-29 14:34:52,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:34:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:52,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:52,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:52,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:52,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:52,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:53,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:53,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:53,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:57,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:57,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 14:34:57,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:34:57,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 14:34:57,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:57,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:57,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 14:34:57,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:34:57,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 14:34:57,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:57,631 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 14:34:57,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:34:57,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:57,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:57,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:57,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:34:57,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:57,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 14:34:57,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:57,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:57,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:34:57,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:34:57,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:34:57,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:34:57,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 14:34:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:57,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:57,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:57,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:57,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 14:34:57,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:34:57,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 14:34:57,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:57,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:57,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:34:57,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:34:57,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 14:34:57,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:57,909 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 14:34:57,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395117865] [2020-10-29 14:34:57,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:34:57,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 14:34:57,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679557828] [2020-10-29 14:34:57,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 14:34:57,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:34:57,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 14:34:57,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-29 14:34:57,916 INFO L87 Difference]: Start difference. First operand 10758 states and 18778 transitions. Second operand 10 states. [2020-10-29 14:34:58,208 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 14:34:58,726 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-29 14:34:59,511 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-29 14:35:00,100 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-29 14:35:01,155 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-29 14:35:01,778 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-29 14:35:02,349 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-29 14:35:04,925 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-29 14:35:06,220 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-29 14:35:07,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:35:07,451 INFO L93 Difference]: Finished difference Result 24852 states and 46245 transitions. [2020-10-29 14:35:07,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 14:35:07,452 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2020-10-29 14:35:07,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:35:07,559 INFO L225 Difference]: With dead ends: 24852 [2020-10-29 14:35:07,560 INFO L226 Difference]: Without dead ends: 14114 [2020-10-29 14:35:07,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=275, Invalid=985, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 14:35:07,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14114 states. [2020-10-29 14:35:10,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14114 to 11988. [2020-10-29 14:35:10,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11988 states. [2020-10-29 14:35:10,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11988 states to 11988 states and 21227 transitions. [2020-10-29 14:35:10,217 INFO L78 Accepts]: Start accepts. Automaton has 11988 states and 21227 transitions. Word has length 78 [2020-10-29 14:35:10,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:35:10,219 INFO L481 AbstractCegarLoop]: Abstraction has 11988 states and 21227 transitions. [2020-10-29 14:35:10,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 14:35:10,219 INFO L276 IsEmpty]: Start isEmpty. Operand 11988 states and 21227 transitions. [2020-10-29 14:35:10,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 14:35:10,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:35:10,244 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] [2020-10-29 14:35:10,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 14:35:10,244 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:35:10,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:35:10,245 INFO L82 PathProgramCache]: Analyzing trace with hash 343016195, now seen corresponding path program 1 times [2020-10-29 14:35:10,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:35:10,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447490826] [2020-10-29 14:35:10,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:35:10,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:10,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:10,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:10,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:11,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:11,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 14:35:11,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 14:35:11,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1071 [2020-10-29 14:35:11,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:11,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:11,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:35:11,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-29 14:35:11,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 14:35:11,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:35:11,688 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 14:35:11,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:35:11,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:11,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:11,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:11,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:35:11,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:35:11,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 14:35:11,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:11,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:11,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:35:11,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:35:11,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:35:11,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:11,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 14:35:11,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:11,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:11,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:11,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 14:35:11,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:35:11,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 14:35:11,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:11,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:11,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:35:11,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:35:11,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 14:35:11,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:11,880 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 14:35:11,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447490826] [2020-10-29 14:35:11,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:35:11,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 14:35:11,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308479413] [2020-10-29 14:35:11,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 14:35:11,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:35:11,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 14:35:11,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:35:11,882 INFO L87 Difference]: Start difference. First operand 11988 states and 21227 transitions. Second operand 7 states. [2020-10-29 14:35:12,413 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 14:35:13,516 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-29 14:35:14,154 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-29 14:35:17,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:35:17,234 INFO L93 Difference]: Finished difference Result 25368 states and 47346 transitions. [2020-10-29 14:35:17,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 14:35:17,234 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2020-10-29 14:35:17,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:35:17,326 INFO L225 Difference]: With dead ends: 25368 [2020-10-29 14:35:17,326 INFO L226 Difference]: Without dead ends: 16128 [2020-10-29 14:35:17,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-29 14:35:17,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16128 states. [2020-10-29 14:35:19,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16128 to 14936. [2020-10-29 14:35:19,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14936 states. [2020-10-29 14:35:20,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14936 states to 14936 states and 27825 transitions. [2020-10-29 14:35:20,123 INFO L78 Accepts]: Start accepts. Automaton has 14936 states and 27825 transitions. Word has length 79 [2020-10-29 14:35:20,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:35:20,124 INFO L481 AbstractCegarLoop]: Abstraction has 14936 states and 27825 transitions. [2020-10-29 14:35:20,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 14:35:20,124 INFO L276 IsEmpty]: Start isEmpty. Operand 14936 states and 27825 transitions. [2020-10-29 14:35:20,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 14:35:20,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:35:20,143 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] [2020-10-29 14:35:20,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 14:35:20,144 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:35:20,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:35:20,144 INFO L82 PathProgramCache]: Analyzing trace with hash -771525297, now seen corresponding path program 1 times [2020-10-29 14:35:20,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:35:20,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954381932] [2020-10-29 14:35:20,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:35:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:20,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:20,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:21,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:21,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 14:35:21,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:35:21,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 842 [2020-10-29 14:35:21,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:21,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:21,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 14:35:21,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 14:35:21,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 14:35:21,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:21,335 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 14:35:21,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:35:21,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:21,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:21,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:21,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:35:21,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:35:21,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:35:21,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:21,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:21,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:35:21,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:35:21,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:35:21,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:21,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 14:35:21,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:21,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:21,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:21,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 14:35:21,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:35:21,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 14:35:21,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:21,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:21,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:35:21,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:35:21,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 14:35:21,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:21,524 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 14:35:21,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954381932] [2020-10-29 14:35:21,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:35:21,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 14:35:21,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794652958] [2020-10-29 14:35:21,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 14:35:21,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:35:21,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 14:35:21,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-29 14:35:21,526 INFO L87 Difference]: Start difference. First operand 14936 states and 27825 transitions. Second operand 10 states. [2020-10-29 14:35:21,807 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-29 14:35:22,296 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-29 14:35:22,704 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-29 14:35:23,876 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 14:35:24,267 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-29 14:35:24,842 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-29 14:35:25,163 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-29 14:35:27,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:35:27,871 INFO L93 Difference]: Finished difference Result 31955 states and 64507 transitions. [2020-10-29 14:35:27,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 14:35:27,872 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 80 [2020-10-29 14:35:27,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:35:28,107 INFO L225 Difference]: With dead ends: 31955 [2020-10-29 14:35:28,107 INFO L226 Difference]: Without dead ends: 17039 [2020-10-29 14:35:28,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2020-10-29 14:35:28,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17039 states. [2020-10-29 14:35:30,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17039 to 15948. [2020-10-29 14:35:30,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15948 states. [2020-10-29 14:35:31,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15948 states to 15948 states and 30033 transitions. [2020-10-29 14:35:31,015 INFO L78 Accepts]: Start accepts. Automaton has 15948 states and 30033 transitions. Word has length 80 [2020-10-29 14:35:31,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:35:31,015 INFO L481 AbstractCegarLoop]: Abstraction has 15948 states and 30033 transitions. [2020-10-29 14:35:31,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 14:35:31,015 INFO L276 IsEmpty]: Start isEmpty. Operand 15948 states and 30033 transitions. [2020-10-29 14:35:31,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-29 14:35:31,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:35:31,035 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:35:31,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 14:35:31,036 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:35:31,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:35:31,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1226894013, now seen corresponding path program 1 times [2020-10-29 14:35:31,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:35:31,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774064609] [2020-10-29 14:35:31,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:35:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:31,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:31,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:31,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:31,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:31,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:31,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:31,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:36,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:36,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 14:35:36,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:35:36,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 14:35:36,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:36,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:36,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:35:36,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-29 14:35:36,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 14:35:36,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:36,362 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 14:35:36,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:35:36,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:36,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:36,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:36,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:35:36,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:35:36,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:35:36,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:36,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:36,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:35:36,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:35:36,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:35:36,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:36,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 14:35:36,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:36,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:36,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:36,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 14:35:36,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:35:36,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:35:36,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:36,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:36,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:35:36,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:35:36,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 14:35:36,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:36,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 14:35:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:36,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:36,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:36,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:36,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:36,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 14:35:36,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 14:35:36,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 14:35:36,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:36,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:36,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:35:36,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:35:36,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 14:35:36,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:36,624 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:35:36,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774064609] [2020-10-29 14:35:36,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:35:36,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 14:35:36,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927861219] [2020-10-29 14:35:36,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 14:35:36,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:35:36,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 14:35:36,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:35:36,627 INFO L87 Difference]: Start difference. First operand 15948 states and 30033 transitions. Second operand 6 states. [2020-10-29 14:35:37,455 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 14:35:41,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:35:41,869 INFO L93 Difference]: Finished difference Result 35376 states and 76668 transitions. [2020-10-29 14:35:41,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 14:35:41,870 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-10-29 14:35:41,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:35:42,013 INFO L225 Difference]: With dead ends: 35376 [2020-10-29 14:35:42,014 INFO L226 Difference]: Without dead ends: 19448 [2020-10-29 14:35:42,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-29 14:35:42,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19448 states. [2020-10-29 14:35:45,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19448 to 18567. [2020-10-29 14:35:45,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18567 states. [2020-10-29 14:35:45,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18567 states to 18567 states and 36287 transitions. [2020-10-29 14:35:45,320 INFO L78 Accepts]: Start accepts. Automaton has 18567 states and 36287 transitions. Word has length 85 [2020-10-29 14:35:45,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:35:45,321 INFO L481 AbstractCegarLoop]: Abstraction has 18567 states and 36287 transitions. [2020-10-29 14:35:45,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 14:35:45,321 INFO L276 IsEmpty]: Start isEmpty. Operand 18567 states and 36287 transitions. [2020-10-29 14:35:45,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-29 14:35:45,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:35:45,340 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:35:45,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 14:35:45,340 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:35:45,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:35:45,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1386621274, now seen corresponding path program 1 times [2020-10-29 14:35:45,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:35:45,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619692342] [2020-10-29 14:35:45,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:35:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:45,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:45,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:45,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:45,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:45,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:45,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:45,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:45,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:47,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:47,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:47,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:47,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:47,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:47,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:48,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:49,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:50,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:50,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 14:35:50,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 14:35:50,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 14:35:50,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:50,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:50,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:35:50,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 14:35:50,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 14:35:50,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:50,658 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 14:35:50,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:35:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:50,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:50,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:50,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:35:50,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:35:50,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 14:35:50,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:50,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:50,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:35:50,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:35:50,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:35:50,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:50,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 14:35:50,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:50,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:50,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:50,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:50,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:50,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 14:35:50,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 14:35:50,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 14:35:50,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:50,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:50,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:35:50,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:35:50,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 14:35:50,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:50,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 14:35:50,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619692342] [2020-10-29 14:35:50,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:35:50,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:35:50,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109621932] [2020-10-29 14:35:50,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:35:50,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:35:50,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:35:50,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:35:50,834 INFO L87 Difference]: Start difference. First operand 18567 states and 36287 transitions. Second operand 5 states. [2020-10-29 14:35:51,097 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 14:35:54,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:35:54,796 INFO L93 Difference]: Finished difference Result 36200 states and 80699 transitions. [2020-10-29 14:35:54,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:35:54,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-29 14:35:54,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:35:54,927 INFO L225 Difference]: With dead ends: 36200 [2020-10-29 14:35:54,928 INFO L226 Difference]: Without dead ends: 17644 [2020-10-29 14:35:55,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:35:55,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17644 states. [2020-10-29 14:35:57,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17644 to 17033. [2020-10-29 14:35:57,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17033 states. [2020-10-29 14:35:57,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17033 states to 17033 states and 34274 transitions. [2020-10-29 14:35:57,746 INFO L78 Accepts]: Start accepts. Automaton has 17033 states and 34274 transitions. Word has length 90 [2020-10-29 14:35:57,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:35:57,746 INFO L481 AbstractCegarLoop]: Abstraction has 17033 states and 34274 transitions. [2020-10-29 14:35:57,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:35:57,746 INFO L276 IsEmpty]: Start isEmpty. Operand 17033 states and 34274 transitions. [2020-10-29 14:35:57,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 14:35:57,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:35:57,756 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:35:57,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 14:35:57,756 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:35:57,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:35:57,756 INFO L82 PathProgramCache]: Analyzing trace with hash 66345849, now seen corresponding path program 1 times [2020-10-29 14:35:57,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:35:57,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763182684] [2020-10-29 14:35:57,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:35:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:57,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:57,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:57,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:57,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:57,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:57,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:58,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:00,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:00,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:00,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:02,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:36:02,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 14:36:02,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 14:36:02,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 14:36:02,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:36:02,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:36:02,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:36:02,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:36:02,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 14:36:02,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:36:03,067 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 14:36:03,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:36:03,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:36:03,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:03,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:36:03,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:36:03,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:36:03,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:36:03,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:36:03,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:36:03,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:36:03,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:36:03,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:36:03,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:36:03,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 14:36:03,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:36:03,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:03,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:36:03,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 14:36:03,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:36:03,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:36:03,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:36:03,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:36:03,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:36:03,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:36:03,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 14:36:03,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:36:03,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 14:36:03,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:36:03,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:03,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:36:03,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 14:36:03,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:36:03,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 14:36:03,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:36:03,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:36:03,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:36:03,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 14:36:03,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 14:36:03,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:36:03,241 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 14:36:03,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763182684] [2020-10-29 14:36:03,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:36:03,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 14:36:03,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256986866] [2020-10-29 14:36:03,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 14:36:03,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:36:03,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 14:36:03,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:36:03,243 INFO L87 Difference]: Start difference. First operand 17033 states and 34274 transitions. Second operand 6 states. [2020-10-29 14:36:03,521 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 14:36:04,639 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-29 14:36:07,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:36:07,040 INFO L93 Difference]: Finished difference Result 33224 states and 74589 transitions. [2020-10-29 14:36:07,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:36:07,040 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2020-10-29 14:36:07,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:36:07,135 INFO L225 Difference]: With dead ends: 33224 [2020-10-29 14:36:07,135 INFO L226 Difference]: Without dead ends: 17390 [2020-10-29 14:36:07,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 14:36:07,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17390 states. [2020-10-29 14:36:09,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17390 to 16873. [2020-10-29 14:36:09,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16873 states. [2020-10-29 14:36:09,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16873 states to 16873 states and 33750 transitions. [2020-10-29 14:36:09,725 INFO L78 Accepts]: Start accepts. Automaton has 16873 states and 33750 transitions. Word has length 92 [2020-10-29 14:36:09,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:36:09,725 INFO L481 AbstractCegarLoop]: Abstraction has 16873 states and 33750 transitions. [2020-10-29 14:36:09,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 14:36:09,725 INFO L276 IsEmpty]: Start isEmpty. Operand 16873 states and 33750 transitions. [2020-10-29 14:36:09,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 14:36:09,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:36:09,736 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:36:09,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 14:36:09,737 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:36:09,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:36:09,737 INFO L82 PathProgramCache]: Analyzing trace with hash 201331920, now seen corresponding path program 1 times [2020-10-29 14:36:09,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:36:09,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205063528] [2020-10-29 14:36:09,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:36:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:36:09,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:09,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:09,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:09,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:09,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:10,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:10,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:10,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:10,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:13,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:14,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:14,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:36:14,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 14:36:14,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 14:36:14,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 14:36:14,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:36:14,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:36:14,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:36:14,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-29 14:36:14,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 14:36:14,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:36:15,100 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 14:36:15,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:36:15,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:36:15,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:15,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:36:15,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:36:15,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:36:15,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 14:36:15,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:36:15,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:36:15,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:36:15,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:36:15,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:36:15,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:36:15,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 14:36:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:36:15,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:15,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:15,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:36:15,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 14:36:15,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:36:15,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 14:36:15,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:36:15,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:36:15,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:36:15,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:36:15,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 14:36:15,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:36:15,226 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:36:15,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205063528] [2020-10-29 14:36:15,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:36:15,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:36:15,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552740524] [2020-10-29 14:36:15,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:36:15,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:36:15,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:36:15,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:36:15,229 INFO L87 Difference]: Start difference. First operand 16873 states and 33750 transitions. Second operand 5 states. [2020-10-29 14:36:15,828 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-29 14:36:19,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:36:19,245 INFO L93 Difference]: Finished difference Result 34368 states and 75740 transitions. [2020-10-29 14:36:19,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:36:19,246 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-10-29 14:36:19,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:36:19,355 INFO L225 Difference]: With dead ends: 34368 [2020-10-29 14:36:19,355 INFO L226 Difference]: Without dead ends: 17514 [2020-10-29 14:36:19,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:36:19,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17514 states. [2020-10-29 14:36:22,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17514 to 16873. [2020-10-29 14:36:22,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16873 states. [2020-10-29 14:36:22,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16873 states to 16873 states and 32381 transitions. [2020-10-29 14:36:22,331 INFO L78 Accepts]: Start accepts. Automaton has 16873 states and 32381 transitions. Word has length 92 [2020-10-29 14:36:22,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:36:22,331 INFO L481 AbstractCegarLoop]: Abstraction has 16873 states and 32381 transitions. [2020-10-29 14:36:22,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:36:22,332 INFO L276 IsEmpty]: Start isEmpty. Operand 16873 states and 32381 transitions. [2020-10-29 14:36:22,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 14:36:22,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:36:22,344 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:36:22,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 14:36:22,345 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:36:22,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:36:22,345 INFO L82 PathProgramCache]: Analyzing trace with hash -859257310, now seen corresponding path program 1 times [2020-10-29 14:36:22,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:36:22,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339617678] [2020-10-29 14:36:22,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:36:22,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:36:22,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:22,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:22,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:22,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:22,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:22,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:23,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:23,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:24,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:24,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:27,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:36:27,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 14:36:27,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 14:36:27,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 14:36:27,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:36:27,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:36:27,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:36:27,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-29 14:36:27,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 14:36:27,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:36:27,659 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 14:36:27,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:36:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:36:27,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:27,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:36:27,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:36:27,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:36:27,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:36:27,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:36:27,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:36:27,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:36:27,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:36:27,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:36:27,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:36:27,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 14:36:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:36:27,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:27,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:27,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:36:27,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 14:36:27,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:36:27,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:36:27,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:36:27,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:36:27,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:36:27,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 14:36:27,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 14:36:27,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:36:27,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 14:36:27,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339617678] [2020-10-29 14:36:27,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:36:27,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 14:36:27,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576455363] [2020-10-29 14:36:27,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 14:36:27,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:36:27,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 14:36:27,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:36:27,785 INFO L87 Difference]: Start difference. First operand 16873 states and 32381 transitions. Second operand 6 states. [2020-10-29 14:36:28,149 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-29 14:36:28,834 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-29 14:36:29,127 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 14:36:36,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:36:36,418 INFO L93 Difference]: Finished difference Result 43353 states and 103684 transitions. [2020-10-29 14:36:36,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 14:36:36,419 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2020-10-29 14:36:36,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:36:36,597 INFO L225 Difference]: With dead ends: 43353 [2020-10-29 14:36:36,597 INFO L226 Difference]: Without dead ends: 26499 [2020-10-29 14:36:36,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-10-29 14:36:36,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26499 states. [2020-10-29 14:36:41,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26499 to 25183. [2020-10-29 14:36:41,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25183 states. [2020-10-29 14:36:41,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25183 states to 25183 states and 56183 transitions. [2020-10-29 14:36:41,924 INFO L78 Accepts]: Start accepts. Automaton has 25183 states and 56183 transitions. Word has length 92 [2020-10-29 14:36:41,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:36:41,924 INFO L481 AbstractCegarLoop]: Abstraction has 25183 states and 56183 transitions. [2020-10-29 14:36:41,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 14:36:41,925 INFO L276 IsEmpty]: Start isEmpty. Operand 25183 states and 56183 transitions. [2020-10-29 14:36:41,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 14:36:41,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:36:41,939 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:36:41,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 14:36:41,939 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:36:41,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:36:41,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1481720178, now seen corresponding path program 1 times [2020-10-29 14:36:41,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:36:41,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596288292] [2020-10-29 14:36:41,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:36:41,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:36:41,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:42,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:42,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:42,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:42,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:42,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:42,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:42,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:43,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:46,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:36:46,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 14:36:46,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:36:46,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 14:36:46,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:36:46,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:36:46,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:36:46,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-29 14:36:46,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 14:36:46,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:36:47,238 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 14:36:47,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:36:47,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:36:47,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:47,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:36:47,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:36:47,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:36:47,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 14:36:47,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:36:47,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:36:47,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:36:47,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:36:47,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:36:47,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:36:47,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 14:36:47,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:36:47,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:47,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:36:47,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:36:47,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:36:47,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:36:47,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:36:47,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:36:47,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:36:47,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:36:47,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:36:47,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:36:47,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 14:36:47,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:36:47,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:47,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:47,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:36:47,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 14:36:47,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:36:47,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 14:36:47,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:36:47,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:36:47,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:36:47,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:36:47,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 14:36:47,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:36:47,441 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 14:36:47,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596288292] [2020-10-29 14:36:47,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:36:47,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 14:36:47,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967775814] [2020-10-29 14:36:47,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 14:36:47,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:36:47,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 14:36:47,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:36:47,443 INFO L87 Difference]: Start difference. First operand 25183 states and 56183 transitions. Second operand 6 states. [2020-10-29 14:36:47,842 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 14:36:56,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:36:56,104 INFO L93 Difference]: Finished difference Result 71298 states and 198424 transitions. [2020-10-29 14:36:56,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 14:36:56,105 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2020-10-29 14:36:56,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:36:57,028 INFO L225 Difference]: With dead ends: 71298 [2020-10-29 14:36:57,028 INFO L226 Difference]: Without dead ends: 45974 [2020-10-29 14:36:57,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-10-29 14:36:57,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45974 states.