/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.1.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 14:33:17,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 14:33:17,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 14:33:17,520 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 14:33:17,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 14:33:17,523 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 14:33:17,524 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 14:33:17,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 14:33:17,529 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 14:33:17,530 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 14:33:17,532 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 14:33:17,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 14:33:17,534 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 14:33:17,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 14:33:17,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 14:33:17,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 14:33:17,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 14:33:17,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 14:33:17,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 14:33:17,544 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 14:33:17,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 14:33:17,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 14:33:17,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 14:33:17,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 14:33:17,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 14:33:17,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 14:33:17,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 14:33:17,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 14:33:17,574 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 14:33:17,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 14:33:17,577 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 14:33:17,578 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 14:33:17,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 14:33:17,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 14:33:17,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 14:33:17,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 14:33:17,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 14:33:17,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 14:33:17,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 14:33:17,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 14:33:17,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 14:33:17,587 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 14:33:17,615 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 14:33:17,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 14:33:17,617 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 14:33:17,617 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 14:33:17,618 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 14:33:17,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 14:33:17,618 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 14:33:17,618 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 14:33:17,619 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 14:33:17,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 14:33:17,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 14:33:17,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 14:33:17,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 14:33:17,620 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 14:33:17,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 14:33:17,620 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 14:33:17,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 14:33:17,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 14:33:17,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 14:33:17,621 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 14:33:17,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 14:33:17,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:33:17,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 14:33:17,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 14:33:17,622 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 14:33:17,622 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 14:33:17,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 14:33:17,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 14:33:17,623 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 14:33:17,623 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 14:33:18,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 14:33:18,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 14:33:18,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 14:33:18,089 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 14:33:18,090 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 14:33:18,091 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/mem_slave_tlm.1.cil.c [2020-10-29 14:33:18,189 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10dda4186/513ba47e37c84fa1a3dea87df2109e5e/FLAG407d88eaa [2020-10-29 14:33:18,865 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 14:33:18,865 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/mem_slave_tlm.1.cil.c [2020-10-29 14:33:18,888 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10dda4186/513ba47e37c84fa1a3dea87df2109e5e/FLAG407d88eaa [2020-10-29 14:33:19,195 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10dda4186/513ba47e37c84fa1a3dea87df2109e5e [2020-10-29 14:33:19,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 14:33:19,216 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 14:33:19,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 14:33:19,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 14:33:19,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 14:33:19,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:33:19" (1/1) ... [2020-10-29 14:33:19,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d846b01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:19, skipping insertion in model container [2020-10-29 14:33:19,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:33:19" (1/1) ... [2020-10-29 14:33:19,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 14:33:19,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 14:33:19,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:33:19,599 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 14:33:19,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:33:19,773 INFO L208 MainTranslator]: Completed translation [2020-10-29 14:33:19,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:19 WrapperNode [2020-10-29 14:33:19,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 14:33:19,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 14:33:19,776 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 14:33:19,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 14:33:19,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:19" (1/1) ... [2020-10-29 14:33:19,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:19" (1/1) ... [2020-10-29 14:33:19,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:19" (1/1) ... [2020-10-29 14:33:19,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:19" (1/1) ... [2020-10-29 14:33:19,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:19" (1/1) ... [2020-10-29 14:33:19,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:19" (1/1) ... [2020-10-29 14:33:19,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:19" (1/1) ... [2020-10-29 14:33:19,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 14:33:19,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 14:33:19,869 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 14:33:19,869 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 14:33:19,870 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:19" (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 14:33:20,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 14:33:20,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 14:33:20,028 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 14:33:20,029 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-29 14:33:20,029 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_read [2020-10-29 14:33:20,029 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_write [2020-10-29 14:33:20,029 INFO L138 BoogieDeclarations]: Found implementation of procedure m_run [2020-10-29 14:33:20,029 INFO L138 BoogieDeclarations]: Found implementation of procedure s_run [2020-10-29 14:33:20,029 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-29 14:33:20,030 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-29 14:33:20,030 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 14:33:20,030 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 14:33:20,030 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 14:33:20,030 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 14:33:20,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 14:33:20,031 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 14:33:20,031 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-29 14:33:20,031 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_read [2020-10-29 14:33:20,031 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_write [2020-10-29 14:33:20,031 INFO L130 BoogieDeclarations]: Found specification of procedure m_run [2020-10-29 14:33:20,031 INFO L130 BoogieDeclarations]: Found specification of procedure s_run [2020-10-29 14:33:20,032 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-29 14:33:20,032 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-29 14:33:20,032 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 14:33:20,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 14:33:20,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 14:33:20,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 14:33:20,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 14:33:20,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 14:33:20,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 14:33:21,260 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 14:33:21,261 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-10-29 14:33:21,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:33:21 BoogieIcfgContainer [2020-10-29 14:33:21,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 14:33:21,266 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 14:33:21,266 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 14:33:21,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 14:33:21,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 02:33:19" (1/3) ... [2020-10-29 14:33:21,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@263eec3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:33:21, skipping insertion in model container [2020-10-29 14:33:21,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:33:19" (2/3) ... [2020-10-29 14:33:21,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@263eec3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:33:21, skipping insertion in model container [2020-10-29 14:33:21,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:33:21" (3/3) ... [2020-10-29 14:33:21,275 INFO L111 eAbstractionObserver]: Analyzing ICFG mem_slave_tlm.1.cil.c [2020-10-29 14:33:21,291 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 14:33:21,298 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 14:33:21,322 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 14:33:21,356 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 14:33:21,356 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 14:33:21,356 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 14:33:21,357 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 14:33:21,357 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 14:33:21,357 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 14:33:21,357 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 14:33:21,357 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 14:33:21,420 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states. [2020-10-29 14:33:21,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 14:33:21,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:33:21,435 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 14:33:21,435 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:33:21,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:33:21,443 INFO L82 PathProgramCache]: Analyzing trace with hash 804727503, now seen corresponding path program 1 times [2020-10-29 14:33:21,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:33:21,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092589726] [2020-10-29 14:33:21,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:33:21,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:33:21,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:21,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:22,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:22,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:22,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:22,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:23,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:23,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:23,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:23,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:24,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:24,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:24,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:24,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:26,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:33:26,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 14:33:26,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 14:33:26,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 14:33:26,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:33:26,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:33:26,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:33:26,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:33:26,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 14:33:26,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 14:33:27,126 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-29 14:33:27,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:33:27,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:33:27,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:27,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:33:27,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:33:27,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:33:27,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 14:33:27,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:33:27,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:33:27,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:33:27,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:33:27,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:33:27,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:33:27,216 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 14:33:27,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092589726] [2020-10-29 14:33:27,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:33:27,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:33:27,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359880162] [2020-10-29 14:33:27,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:33:27,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:33:27,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:33:27,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:33:27,247 INFO L87 Difference]: Start difference. First operand 302 states. Second operand 4 states. [2020-10-29 14:33:27,519 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-29 14:33:29,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:33:29,313 INFO L93 Difference]: Finished difference Result 628 states and 1113 transitions. [2020-10-29 14:33:29,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:33:29,316 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-29 14:33:29,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:33:29,333 INFO L225 Difference]: With dead ends: 628 [2020-10-29 14:33:29,334 INFO L226 Difference]: Without dead ends: 341 [2020-10-29 14:33:29,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:33:29,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-10-29 14:33:29,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 290. [2020-10-29 14:33:29,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-29 14:33:29,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 469 transitions. [2020-10-29 14:33:29,449 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 469 transitions. Word has length 41 [2020-10-29 14:33:29,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:33:29,449 INFO L481 AbstractCegarLoop]: Abstraction has 290 states and 469 transitions. [2020-10-29 14:33:29,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:33:29,450 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 469 transitions. [2020-10-29 14:33:29,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 14:33:29,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:33:29,454 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] [2020-10-29 14:33:29,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 14:33:29,454 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:33:29,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:33:29,455 INFO L82 PathProgramCache]: Analyzing trace with hash 2134629490, now seen corresponding path program 1 times [2020-10-29 14:33:29,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:33:29,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295586739] [2020-10-29 14:33:29,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:33:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:33:29,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:29,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:29,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:29,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:29,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:29,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:30,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:30,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:30,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:30,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:30,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:30,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:33,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:34,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:33:34,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 14:33:34,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 14:33:34,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 14:33:34,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:33:34,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:33:34,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:33:34,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:33:34,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 14:33:34,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:33:34,811 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-29 14:33:34,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:33:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:33:34,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:34,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:33:34,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:33:34,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:33:34,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 14:33:34,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:33:34,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:33:34,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:33:34,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:33:34,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:33:34,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:33:34,865 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 14:33:34,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295586739] [2020-10-29 14:33:34,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:33:34,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:33:34,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341097744] [2020-10-29 14:33:34,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:33:34,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:33:34,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:33:34,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:33:34,883 INFO L87 Difference]: Start difference. First operand 290 states and 469 transitions. Second operand 5 states. [2020-10-29 14:33:35,156 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-29 14:33:36,041 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 14:33:38,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:33:38,561 INFO L93 Difference]: Finished difference Result 1070 states and 1724 transitions. [2020-10-29 14:33:38,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:33:38,562 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-10-29 14:33:38,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:33:38,568 INFO L225 Difference]: With dead ends: 1070 [2020-10-29 14:33:38,569 INFO L226 Difference]: Without dead ends: 791 [2020-10-29 14:33:38,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:33:38,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2020-10-29 14:33:38,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 693. [2020-10-29 14:33:38,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-10-29 14:33:38,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1070 transitions. [2020-10-29 14:33:38,725 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1070 transitions. Word has length 44 [2020-10-29 14:33:38,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:33:38,726 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 1070 transitions. [2020-10-29 14:33:38,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:33:38,726 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1070 transitions. [2020-10-29 14:33:38,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 14:33:38,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:33:38,729 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] [2020-10-29 14:33:38,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 14:33:38,730 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:33:38,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:33:38,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1379677426, now seen corresponding path program 1 times [2020-10-29 14:33:38,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:33:38,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125768152] [2020-10-29 14:33:38,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:33:38,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:33:38,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:38,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:38,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:38,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:39,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:39,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:39,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:39,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:39,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:41,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:41,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:43,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:33:43,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 14:33:43,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 14:33:43,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 14:33:43,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:33:43,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:33:43,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:33:43,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:33:43,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 14:33:43,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:33:44,046 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-29 14:33:44,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:33:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:33:44,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:44,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:33:44,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:33:44,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:33:44,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:33:44,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:33:44,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:33:44,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:33:44,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:33:44,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:33:44,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:33:44,079 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 14:33:44,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2125768152] [2020-10-29 14:33:44,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:33:44,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:33:44,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721470435] [2020-10-29 14:33:44,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:33:44,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:33:44,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:33:44,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:33:44,087 INFO L87 Difference]: Start difference. First operand 693 states and 1070 transitions. Second operand 4 states. [2020-10-29 14:33:44,342 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-29 14:33:45,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:33:45,791 INFO L93 Difference]: Finished difference Result 1434 states and 2222 transitions. [2020-10-29 14:33:45,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:33:45,792 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-29 14:33:45,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:33:45,798 INFO L225 Difference]: With dead ends: 1434 [2020-10-29 14:33:45,798 INFO L226 Difference]: Without dead ends: 761 [2020-10-29 14:33:45,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:33:45,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2020-10-29 14:33:45,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 693. [2020-10-29 14:33:45,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-10-29 14:33:45,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1048 transitions. [2020-10-29 14:33:45,881 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1048 transitions. Word has length 50 [2020-10-29 14:33:45,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:33:45,881 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 1048 transitions. [2020-10-29 14:33:45,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:33:45,882 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1048 transitions. [2020-10-29 14:33:45,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 14:33:45,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:33:45,884 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] [2020-10-29 14:33:45,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 14:33:45,885 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:33:45,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:33:45,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1827426336, now seen corresponding path program 1 times [2020-10-29 14:33:45,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:33:45,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437320205] [2020-10-29 14:33:45,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:33:45,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:33:45,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:45,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:46,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:46,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:46,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:49,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:33:49,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 14:33:49,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 14:33:49,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3276 [2020-10-29 14:33:49,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:33:49,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:33:49,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 14:33:49,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:33:49,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 14:33:49,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:33:49,454 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-29 14:33:49,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:33:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:33:49,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:49,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:33:49,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:33:49,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:33:49,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 14:33:49,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:33:49,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:33:49,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:33:49,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:33:49,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:33:49,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:33:49,511 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 14:33:49,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437320205] [2020-10-29 14:33:49,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:33:49,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 14:33:49,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827454697] [2020-10-29 14:33:49,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 14:33:49,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:33:49,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 14:33:49,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:33:49,514 INFO L87 Difference]: Start difference. First operand 693 states and 1048 transitions. Second operand 7 states. [2020-10-29 14:33:49,770 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-29 14:33:50,797 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 14:33:51,062 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 14:33:52,817 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 14:33:53,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:33:53,066 INFO L93 Difference]: Finished difference Result 1329 states and 1985 transitions. [2020-10-29 14:33:53,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 14:33:53,067 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-10-29 14:33:53,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:33:53,077 INFO L225 Difference]: With dead ends: 1329 [2020-10-29 14:33:53,077 INFO L226 Difference]: Without dead ends: 1325 [2020-10-29 14:33:53,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-29 14:33:53,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2020-10-29 14:33:53,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1150. [2020-10-29 14:33:53,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1150 states. [2020-10-29 14:33:53,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1754 transitions. [2020-10-29 14:33:53,232 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1754 transitions. Word has length 50 [2020-10-29 14:33:53,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:33:53,233 INFO L481 AbstractCegarLoop]: Abstraction has 1150 states and 1754 transitions. [2020-10-29 14:33:53,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 14:33:53,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1754 transitions. [2020-10-29 14:33:53,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 14:33:53,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:33:53,235 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] [2020-10-29 14:33:53,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 14:33:53,235 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:33:53,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:33:53,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1162821042, now seen corresponding path program 1 times [2020-10-29 14:33:53,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:33:53,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709996692] [2020-10-29 14:33:53,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:33:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:33:53,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:53,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:53,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:53,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:53,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:54,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:54,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:58,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:33:58,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 14:33:58,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:33:58,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 14:33:58,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:33:58,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:33:58,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 14:33:58,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:33:58,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 14:33:58,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:33:58,529 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-29 14:33:58,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:33:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:33:58,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:33:58,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:33:58,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:33:58,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:33:58,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 14:33:58,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:33:58,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:33:58,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:33:58,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:33:58,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:33:58,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:33:58,600 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 14:33:58,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709996692] [2020-10-29 14:33:58,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:33:58,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:33:58,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853512658] [2020-10-29 14:33:58,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:33:58,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:33:58,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:33:58,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:33:58,607 INFO L87 Difference]: Start difference. First operand 1150 states and 1754 transitions. Second operand 5 states. [2020-10-29 14:33:58,932 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-29 14:34:01,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:34:01,168 INFO L93 Difference]: Finished difference Result 2505 states and 3805 transitions. [2020-10-29 14:34:01,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:34:01,168 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-10-29 14:34:01,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:34:01,178 INFO L225 Difference]: With dead ends: 2505 [2020-10-29 14:34:01,179 INFO L226 Difference]: Without dead ends: 1375 [2020-10-29 14:34:01,184 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 14:34:01,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2020-10-29 14:34:01,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 1129. [2020-10-29 14:34:01,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1129 states. [2020-10-29 14:34:01,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1724 transitions. [2020-10-29 14:34:01,328 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1724 transitions. Word has length 51 [2020-10-29 14:34:01,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:34:01,329 INFO L481 AbstractCegarLoop]: Abstraction has 1129 states and 1724 transitions. [2020-10-29 14:34:01,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:34:01,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1724 transitions. [2020-10-29 14:34:01,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 14:34:01,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:34:01,332 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 14:34:01,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 14:34:01,333 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:34:01,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:34:01,333 INFO L82 PathProgramCache]: Analyzing trace with hash 873893027, now seen corresponding path program 1 times [2020-10-29 14:34:01,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:34:01,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044109709] [2020-10-29 14:34:01,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:34:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:01,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:01,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:01,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:01,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:01,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:01,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:02,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:02,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:03,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:03,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:04,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:04,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:04,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:06,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:06,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 14:34:06,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 14:34:06,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 14:34:06,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:06,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:06,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:34:06,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:34:06,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 14:34:06,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:06,620 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-29 14:34:06,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:34:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:06,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:06,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:06,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:34:06,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:06,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:34:06,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:06,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:06,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:34:06,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:34:06,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:34:06,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:34:06,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 14:34:06,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:06,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:06,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:06,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:34:06,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:06,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 14:34:06,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:06,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:06,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:34:06,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:34:06,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 14:34:06,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:06,770 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 14:34:06,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044109709] [2020-10-29 14:34:06,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:34:06,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 14:34:06,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223222390] [2020-10-29 14:34:06,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:34:06,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:34:06,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:34:06,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:34:06,779 INFO L87 Difference]: Start difference. First operand 1129 states and 1724 transitions. Second operand 5 states. [2020-10-29 14:34:07,040 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-29 14:34:09,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:34:09,004 INFO L93 Difference]: Finished difference Result 2340 states and 3591 transitions. [2020-10-29 14:34:09,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:34:09,005 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-29 14:34:09,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:34:09,013 INFO L225 Difference]: With dead ends: 2340 [2020-10-29 14:34:09,014 INFO L226 Difference]: Without dead ends: 1231 [2020-10-29 14:34:09,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 1 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 14:34:09,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2020-10-29 14:34:09,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1129. [2020-10-29 14:34:09,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1129 states. [2020-10-29 14:34:09,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1696 transitions. [2020-10-29 14:34:09,186 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1696 transitions. Word has length 64 [2020-10-29 14:34:09,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:34:09,187 INFO L481 AbstractCegarLoop]: Abstraction has 1129 states and 1696 transitions. [2020-10-29 14:34:09,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:34:09,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1696 transitions. [2020-10-29 14:34:09,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 14:34:09,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:34:09,190 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] [2020-10-29 14:34:09,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 14:34:09,190 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:34:09,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:34:09,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1927608813, now seen corresponding path program 1 times [2020-10-29 14:34:09,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:34:09,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367667516] [2020-10-29 14:34:09,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:34:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:09,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:09,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:09,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:09,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:09,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:09,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:10,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:10,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:12,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:12,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 14:34:12,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:34:12,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2936 [2020-10-29 14:34:12,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:12,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:12,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:34:12,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:34:12,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 14:34:12,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:12,415 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-29 14:34:12,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:34:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:12,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:12,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:12,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:34:12,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:12,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 14:34:12,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:12,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:12,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:34:12,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:34:12,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:34:12,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:12,440 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 14:34:12,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367667516] [2020-10-29 14:34:12,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:34:12,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:34:12,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43288969] [2020-10-29 14:34:12,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:34:12,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:34:12,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:34:12,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:34:12,442 INFO L87 Difference]: Start difference. First operand 1129 states and 1696 transitions. Second operand 5 states. [2020-10-29 14:34:12,698 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-29 14:34:13,397 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 14:34:15,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:34:15,879 INFO L93 Difference]: Finished difference Result 4513 states and 7063 transitions. [2020-10-29 14:34:15,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:34:15,881 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-29 14:34:15,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:34:15,906 INFO L225 Difference]: With dead ends: 4513 [2020-10-29 14:34:15,907 INFO L226 Difference]: Without dead ends: 3401 [2020-10-29 14:34:15,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:34:15,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3401 states. [2020-10-29 14:34:16,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3401 to 3109. [2020-10-29 14:34:16,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3109 states. [2020-10-29 14:34:16,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 4729 transitions. [2020-10-29 14:34:16,393 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 4729 transitions. Word has length 64 [2020-10-29 14:34:16,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:34:16,394 INFO L481 AbstractCegarLoop]: Abstraction has 3109 states and 4729 transitions. [2020-10-29 14:34:16,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:34:16,394 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 4729 transitions. [2020-10-29 14:34:16,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 14:34:16,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:34:16,401 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] [2020-10-29 14:34:16,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 14:34:16,402 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:34:16,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:34:16,402 INFO L82 PathProgramCache]: Analyzing trace with hash -303559676, now seen corresponding path program 1 times [2020-10-29 14:34:16,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:34:16,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651233357] [2020-10-29 14:34:16,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:34:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:16,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:16,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:16,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:16,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:16,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:17,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:17,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 14:34:17,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 14:34:17,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 868 [2020-10-29 14:34:17,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:17,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:17,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 14:34:17,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:34:17,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 14:34:17,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:17,569 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-29 14:34:17,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:34:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:17,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:17,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:17,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:34:17,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:17,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:34:17,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:17,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:17,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:34:17,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:34:17,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:34:17,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:17,599 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 14:34:17,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651233357] [2020-10-29 14:34:17,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:34:17,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:34:17,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125581173] [2020-10-29 14:34:17,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:34:17,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:34:17,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:34:17,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:34:17,602 INFO L87 Difference]: Start difference. First operand 3109 states and 4729 transitions. Second operand 4 states. [2020-10-29 14:34:17,859 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-29 14:34:20,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:34:20,106 INFO L93 Difference]: Finished difference Result 7672 states and 12348 transitions. [2020-10-29 14:34:20,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:34:20,108 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-10-29 14:34:20,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:34:20,144 INFO L225 Difference]: With dead ends: 7672 [2020-10-29 14:34:20,144 INFO L226 Difference]: Without dead ends: 4581 [2020-10-29 14:34:20,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:34:20,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4581 states. [2020-10-29 14:34:20,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4581 to 4224. [2020-10-29 14:34:20,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4224 states. [2020-10-29 14:34:20,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4224 states to 4224 states and 6675 transitions. [2020-10-29 14:34:20,905 INFO L78 Accepts]: Start accepts. Automaton has 4224 states and 6675 transitions. Word has length 64 [2020-10-29 14:34:20,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:34:20,905 INFO L481 AbstractCegarLoop]: Abstraction has 4224 states and 6675 transitions. [2020-10-29 14:34:20,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:34:20,906 INFO L276 IsEmpty]: Start isEmpty. Operand 4224 states and 6675 transitions. [2020-10-29 14:34:20,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-29 14:34:20,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:34:20,914 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 14:34:20,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 14:34:20,915 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:34:20,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:34:20,915 INFO L82 PathProgramCache]: Analyzing trace with hash 440242902, now seen corresponding path program 1 times [2020-10-29 14:34:20,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:34:20,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221434646] [2020-10-29 14:34:20,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:34:20,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:20,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:20,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:21,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:21,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:21,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:21,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:22,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:22,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 14:34:22,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:34:22,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2042 [2020-10-29 14:34:22,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:22,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:22,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:34:22,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-29 14:34:22,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 14:34:22,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:23,229 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-29 14:34:23,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:34:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:23,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:23,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:23,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:34:23,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:23,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 14:34:23,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:23,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:23,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:34:23,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:34:23,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:34:23,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:23,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 14:34:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:23,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:23,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:23,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 14:34:23,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:23,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 14:34:23,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:23,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:23,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:34:23,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:34:23,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 14:34:23,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:23,480 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 14:34:23,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221434646] [2020-10-29 14:34:23,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:34:23,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 14:34:23,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067359233] [2020-10-29 14:34:23,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 14:34:23,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:34:23,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 14:34:23,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:34:23,482 INFO L87 Difference]: Start difference. First operand 4224 states and 6675 transitions. Second operand 7 states. [2020-10-29 14:34:24,066 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 14:34:25,226 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-29 14:34:25,947 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 14:34:29,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:34:29,196 INFO L93 Difference]: Finished difference Result 9255 states and 15560 transitions. [2020-10-29 14:34:29,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 14:34:29,197 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-10-29 14:34:29,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:34:29,252 INFO L225 Difference]: With dead ends: 9255 [2020-10-29 14:34:29,252 INFO L226 Difference]: Without dead ends: 7093 [2020-10-29 14:34:29,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 1 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 14:34:29,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7093 states. [2020-10-29 14:34:30,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7093 to 6514. [2020-10-29 14:34:30,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6514 states. [2020-10-29 14:34:30,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6514 states to 6514 states and 10906 transitions. [2020-10-29 14:34:30,435 INFO L78 Accepts]: Start accepts. Automaton has 6514 states and 10906 transitions. Word has length 78 [2020-10-29 14:34:30,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:34:30,437 INFO L481 AbstractCegarLoop]: Abstraction has 6514 states and 10906 transitions. [2020-10-29 14:34:30,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 14:34:30,437 INFO L276 IsEmpty]: Start isEmpty. Operand 6514 states and 10906 transitions. [2020-10-29 14:34:30,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 14:34:30,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:34:30,452 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:34:30,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 14:34:30,452 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:34:30,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:34:30,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1215834536, now seen corresponding path program 1 times [2020-10-29 14:34:30,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:34:30,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133516174] [2020-10-29 14:34:30,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:34:30,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:30,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:30,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:30,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:30,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:31,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:32,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:32,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 14:34:32,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 14:34:32,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2227 [2020-10-29 14:34:32,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:32,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:32,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 14:34:32,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 14:34:32,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 14:34:32,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:33,074 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-29 14:34:33,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:34:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:33,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:33,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:33,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:34:33,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:33,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:34:33,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:33,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:33,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:34:33,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:34:33,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:34:33,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:33,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 14:34:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:33,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:33,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:33,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 14:34:33,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:33,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 14:34:33,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:33,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:33,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:34:33,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:34:33,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 14:34:33,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:33,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:34:33,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133516174] [2020-10-29 14:34:33,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:34:33,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 14:34:33,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722112962] [2020-10-29 14:34:33,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 14:34:33,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:34:33,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 14:34:33,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-29 14:34:33,285 INFO L87 Difference]: Start difference. First operand 6514 states and 10906 transitions. Second operand 10 states. [2020-10-29 14:34:33,612 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 14:34:34,074 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 14:34:34,445 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 14:34:35,789 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 14:34:36,059 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 14:34:36,355 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-29 14:34:36,509 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-29 14:34:36,819 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 14:34:38,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:34:38,744 INFO L93 Difference]: Finished difference Result 13649 states and 24262 transitions. [2020-10-29 14:34:38,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 14:34:38,744 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 79 [2020-10-29 14:34:38,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:34:38,805 INFO L225 Difference]: With dead ends: 13649 [2020-10-29 14:34:38,806 INFO L226 Difference]: Without dead ends: 7153 [2020-10-29 14:34:38,866 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 14:34:38,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7153 states. [2020-10-29 14:34:40,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7153 to 6757. [2020-10-29 14:34:40,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6757 states. [2020-10-29 14:34:40,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6757 states to 6757 states and 11244 transitions. [2020-10-29 14:34:40,100 INFO L78 Accepts]: Start accepts. Automaton has 6757 states and 11244 transitions. Word has length 79 [2020-10-29 14:34:40,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:34:40,101 INFO L481 AbstractCegarLoop]: Abstraction has 6757 states and 11244 transitions. [2020-10-29 14:34:40,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 14:34:40,101 INFO L276 IsEmpty]: Start isEmpty. Operand 6757 states and 11244 transitions. [2020-10-29 14:34:40,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 14:34:40,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:34:40,115 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] [2020-10-29 14:34:40,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 14:34:40,116 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:34:40,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:34:40,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1062315412, now seen corresponding path program 1 times [2020-10-29 14:34:40,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:34:40,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309888094] [2020-10-29 14:34:40,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:34:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:40,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:40,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:40,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:40,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:40,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:40,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:40,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:40,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:43,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:43,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:43,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:45,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:45,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 14:34:45,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 14:34:45,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 14:34:45,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:45,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:45,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:34:45,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:34:45,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 14:34:45,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:45,416 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-29 14:34:45,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:34:45,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:45,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:45,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:45,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:34:45,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:45,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:34:45,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:45,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:45,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:34:45,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:34:45,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:34:45,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:45,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 14:34:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:45,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:45,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:45,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 14:34:45,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:45,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 14:34:45,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:45,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:45,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:34:45,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:34:45,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 14:34:45,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:45,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 14:34:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:45,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:45,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:45,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 14:34:45,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:45,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 14:34:45,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:45,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:45,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:34:45,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 14:34:45,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 14:34:45,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:45,619 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 14:34:45,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309888094] [2020-10-29 14:34:45,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:34:45,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 14:34:45,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944682710] [2020-10-29 14:34:45,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 14:34:45,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:34:45,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 14:34:45,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:34:45,622 INFO L87 Difference]: Start difference. First operand 6757 states and 11244 transitions. Second operand 6 states. [2020-10-29 14:34:45,890 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-29 14:34:46,132 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-29 14:34:48,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:34:48,883 INFO L93 Difference]: Finished difference Result 13306 states and 23623 transitions. [2020-10-29 14:34:48,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 14:34:48,884 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 91 [2020-10-29 14:34:48,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:34:48,932 INFO L225 Difference]: With dead ends: 13306 [2020-10-29 14:34:48,933 INFO L226 Difference]: Without dead ends: 7003 [2020-10-29 14:34:48,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-29 14:34:48,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7003 states. [2020-10-29 14:34:50,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7003 to 6757. [2020-10-29 14:34:50,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6757 states. [2020-10-29 14:34:50,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6757 states to 6757 states and 11108 transitions. [2020-10-29 14:34:50,076 INFO L78 Accepts]: Start accepts. Automaton has 6757 states and 11108 transitions. Word has length 91 [2020-10-29 14:34:50,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:34:50,076 INFO L481 AbstractCegarLoop]: Abstraction has 6757 states and 11108 transitions. [2020-10-29 14:34:50,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 14:34:50,077 INFO L276 IsEmpty]: Start isEmpty. Operand 6757 states and 11108 transitions. [2020-10-29 14:34:50,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-29 14:34:50,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:34:50,091 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] [2020-10-29 14:34:50,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 14:34:50,091 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:34:50,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:34:50,092 INFO L82 PathProgramCache]: Analyzing trace with hash -866240713, now seen corresponding path program 1 times [2020-10-29 14:34:50,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:34:50,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22663518] [2020-10-29 14:34:50,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:34:50,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:50,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:50,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:50,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:50,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:50,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:50,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:50,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:50,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:51,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:53,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:55,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:55,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 14:34:55,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 14:34:55,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 14:34:55,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:55,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:55,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:34:55,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-29 14:34:55,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 14:34:55,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:55,364 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-29 14:34:55,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:34:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:55,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:55,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:55,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:34:55,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:55,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:34:55,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:55,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:55,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:34:55,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:34:55,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:34:55,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:55,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 14:34:55,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:55,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:55,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:55,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:34:55,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:34:55,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:34:55,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:55,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:55,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:34:55,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:34:55,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:34:55,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:55,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 14:34:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:34:55,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:55,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:34:55,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:34:55,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 14:34:55,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:34:55,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 14:34:55,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:34:55,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:34:55,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:34:55,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:34:55,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 14:34:55,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:34:55,583 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 14:34:55,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22663518] [2020-10-29 14:34:55,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:34:55,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 14:34:55,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677181205] [2020-10-29 14:34:55,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 14:34:55,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:34:55,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 14:34:55,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:34:55,585 INFO L87 Difference]: Start difference. First operand 6757 states and 11108 transitions. Second operand 6 states. [2020-10-29 14:34:55,922 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 14:34:59,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:34:59,568 INFO L93 Difference]: Finished difference Result 17586 states and 31567 transitions. [2020-10-29 14:34:59,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 14:34:59,568 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2020-10-29 14:34:59,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:34:59,649 INFO L225 Difference]: With dead ends: 17586 [2020-10-29 14:34:59,649 INFO L226 Difference]: Without dead ends: 10285 [2020-10-29 14:34:59,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 14:34:59,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10285 states. [2020-10-29 14:35:01,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10285 to 9415. [2020-10-29 14:35:01,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9415 states. [2020-10-29 14:35:01,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9415 states to 9415 states and 16494 transitions. [2020-10-29 14:35:01,354 INFO L78 Accepts]: Start accepts. Automaton has 9415 states and 16494 transitions. Word has length 93 [2020-10-29 14:35:01,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:35:01,354 INFO L481 AbstractCegarLoop]: Abstraction has 9415 states and 16494 transitions. [2020-10-29 14:35:01,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 14:35:01,355 INFO L276 IsEmpty]: Start isEmpty. Operand 9415 states and 16494 transitions. [2020-10-29 14:35:01,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 14:35:01,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:35:01,367 INFO L422 BasicCegarLoop]: trace histogram [2, 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 14:35:01,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 14:35:01,368 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:35:01,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:35:01,368 INFO L82 PathProgramCache]: Analyzing trace with hash 146243370, now seen corresponding path program 1 times [2020-10-29 14:35:01,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:35:01,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986277197] [2020-10-29 14:35:01,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:35:01,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:01,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:01,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:01,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:01,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:01,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:01,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:01,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:02,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:03,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:03,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:04,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:06,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:06,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 14:35:06,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 14:35:06,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 14:35:06,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:06,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:06,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 14:35:06,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-29 14:35:06,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 14:35:06,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:06,672 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-29 14:35:06,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:35:06,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:06,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:06,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:06,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:35:06,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:35:06,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 14:35:06,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:06,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:06,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:35:06,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:35:06,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:35:06,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:06,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 14:35:06,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:06,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:06,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:06,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:35:06,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:35:06,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:35:06,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:06,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:06,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:35:06,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:35:06,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 14:35:06,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:06,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 14:35:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:06,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:06,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:06,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:06,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 14:35:06,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:35:06,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 14:35:06,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:06,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:06,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:35:06,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:35:06,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 14:35:06,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:06,923 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 14:35:06,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986277197] [2020-10-29 14:35:06,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:35:06,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 14:35:06,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759178273] [2020-10-29 14:35:06,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 14:35:06,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:35:06,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 14:35:06,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-29 14:35:06,925 INFO L87 Difference]: Start difference. First operand 9415 states and 16494 transitions. Second operand 11 states. [2020-10-29 14:35:07,514 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 14:35:08,109 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-29 14:35:09,057 WARN L193 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 158 [2020-10-29 14:35:10,318 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 157 [2020-10-29 14:35:11,489 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 159 [2020-10-29 14:35:12,719 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2020-10-29 14:35:15,064 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-29 14:35:17,259 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 14:35:17,648 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 14:35:18,788 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-29 14:35:19,500 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-29 14:35:20,036 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 14:35:20,456 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 14:35:23,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:35:23,561 INFO L93 Difference]: Finished difference Result 28536 states and 58358 transitions. [2020-10-29 14:35:23,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-29 14:35:23,562 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 94 [2020-10-29 14:35:23,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:35:23,771 INFO L225 Difference]: With dead ends: 28536 [2020-10-29 14:35:23,772 INFO L226 Difference]: Without dead ends: 21439 [2020-10-29 14:35:23,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=387, Invalid=1965, Unknown=0, NotChecked=0, Total=2352 [2020-10-29 14:35:23,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21439 states. [2020-10-29 14:35:27,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21439 to 19656. [2020-10-29 14:35:27,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19656 states. [2020-10-29 14:35:27,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19656 states to 19656 states and 39135 transitions. [2020-10-29 14:35:27,826 INFO L78 Accepts]: Start accepts. Automaton has 19656 states and 39135 transitions. Word has length 94 [2020-10-29 14:35:27,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:35:27,827 INFO L481 AbstractCegarLoop]: Abstraction has 19656 states and 39135 transitions. [2020-10-29 14:35:27,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 14:35:27,827 INFO L276 IsEmpty]: Start isEmpty. Operand 19656 states and 39135 transitions. [2020-10-29 14:35:27,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-29 14:35:27,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:35:27,844 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-10-29 14:35:27,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 14:35:27,844 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:35:27,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:35:27,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1739885436, now seen corresponding path program 1 times [2020-10-29 14:35:27,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:35:27,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535762813] [2020-10-29 14:35:27,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:35:27,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:27,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:27,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:27,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:28,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:28,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:28,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:28,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:29,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:30,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:30,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:32,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:32,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 14:35:32,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 14:35:32,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 14:35:32,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:32,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:32,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 14:35:32,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:35:32,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 14:35:32,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:33,135 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-29 14:35:33,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:35:33,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:33,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:33,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:33,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:35:33,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:35:33,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 14:35:33,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:33,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:33,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:35:33,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:35:33,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:35:33,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:33,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 14:35:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:33,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:33,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:33,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:35:33,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:35:33,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 14:35:33,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:33,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:33,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:35:33,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:35:33,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 14:35:33,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:33,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 14:35:33,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:35:33,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:33,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:35:33,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:35:33,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 14:35:33,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:35:33,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 14:35:33,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:35:33,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:35:33,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:35:33,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 14:35:33,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 14:35:33,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:35:33,372 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 14:35:33,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [535762813] [2020-10-29 14:35:33,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:35:33,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 14:35:33,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351728863] [2020-10-29 14:35:33,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 14:35:33,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:35:33,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 14:35:33,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 14:35:33,374 INFO L87 Difference]: Start difference. First operand 19656 states and 39135 transitions. Second operand 8 states. [2020-10-29 14:35:33,632 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-29 14:35:34,315 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-29 14:35:34,670 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 14:35:35,040 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 14:35:37,662 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 14:35:49,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:35:49,707 INFO L93 Difference]: Finished difference Result 71458 states and 255520 transitions. [2020-10-29 14:35:49,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 14:35:49,708 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2020-10-29 14:35:49,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:35:51,179 INFO L225 Difference]: With dead ends: 71458 [2020-10-29 14:35:51,179 INFO L226 Difference]: Without dead ends: 52306 [2020-10-29 14:35:52,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=132, Invalid=374, Unknown=0, NotChecked=0, Total=506 [2020-10-29 14:35:52,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52306 states. [2020-10-29 14:36:04,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52306 to 46802. [2020-10-29 14:36:04,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46802 states. [2020-10-29 14:36:05,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46802 states to 46802 states and 153824 transitions. [2020-10-29 14:36:05,888 INFO L78 Accepts]: Start accepts. Automaton has 46802 states and 153824 transitions. Word has length 95 [2020-10-29 14:36:05,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:36:05,889 INFO L481 AbstractCegarLoop]: Abstraction has 46802 states and 153824 transitions. [2020-10-29 14:36:05,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 14:36:05,889 INFO L276 IsEmpty]: Start isEmpty. Operand 46802 states and 153824 transitions. [2020-10-29 14:36:05,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-29 14:36:05,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:36:05,906 INFO L422 BasicCegarLoop]: trace histogram [2, 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 14:36:05,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 14:36:05,907 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:36:05,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:36:05,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1554880254, now seen corresponding path program 1 times [2020-10-29 14:36:05,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:36:05,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350188629] [2020-10-29 14:36:05,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:36:05,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:36:05,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:06,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:06,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:06,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:06,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:06,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:06,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:07,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:08,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:08,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:10,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:36:10,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 14:36:10,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 14:36:10,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 14:36:10,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:36:10,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:36:10,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 14:36:10,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:36:10,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 14:36:10,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:36:11,178 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-29 14:36:11,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:36:11,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:36:11,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:11,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:36:11,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:36:11,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:36:11,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 14:36:11,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:36:11,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:36:11,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:36:11,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:36:11,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:36:11,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:36:11,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 14:36:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:36:11,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:11,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:36:11,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 14:36:11,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:36:11,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 14:36:11,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:36:11,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:36:11,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:36:11,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:36:11,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 14:36:11,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:36:11,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 14:36:11,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:36:11,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:11,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:36:11,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:36:11,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 14:36:11,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:36:11,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 14:36:11,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:36:11,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:36:11,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:36:11,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:36:11,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 14:36:11,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:36:11,369 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 14:36:11,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350188629] [2020-10-29 14:36:11,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:36:11,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 14:36:11,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806096193] [2020-10-29 14:36:11,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 14:36:11,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:36:11,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 14:36:11,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 14:36:11,371 INFO L87 Difference]: Start difference. First operand 46802 states and 153824 transitions. Second operand 8 states. [2020-10-29 14:36:11,614 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-29 14:36:12,618 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-29 14:36:13,042 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-29 14:36:13,636 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 14:36:14,178 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 14:36:33,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:36:33,858 INFO L93 Difference]: Finished difference Result 107974 states and 559401 transitions. [2020-10-29 14:36:33,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 14:36:33,859 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 96 [2020-10-29 14:36:33,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:36:36,039 INFO L225 Difference]: With dead ends: 107974 [2020-10-29 14:36:36,039 INFO L226 Difference]: Without dead ends: 61378