/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/eca-rers2012/Problem13_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:11:28,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:11:28,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:11:28,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:11:28,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:11:28,598 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:11:28,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:11:28,607 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:11:28,611 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:11:28,618 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:11:28,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:11:28,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:11:28,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:11:28,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:11:28,631 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:11:28,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:11:28,635 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:11:28,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:11:28,647 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:11:28,657 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:11:28,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:11:28,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:11:28,665 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:11:28,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:11:28,676 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:11:28,677 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:11:28,678 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:11:28,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:11:28,681 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:11:28,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:11:28,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:11:28,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:11:28,687 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:11:28,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:11:28,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:11:28,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:11:28,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:11:28,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:11:28,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:11:28,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:11:28,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:11:28,704 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 07:11:28,771 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:11:28,771 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:11:28,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:11:28,778 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:11:28,778 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:11:28,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:11:28,779 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:11:28,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:11:28,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:11:28,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:11:28,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:11:28,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:11:28,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:11:28,782 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:11:28,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:11:28,782 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:11:28,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:11:28,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:11:28,783 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:11:28,783 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:11:28,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:11:28,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:11:28,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:11:28,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:11:28,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:11:28,785 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:11:28,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:11:28,785 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:11:28,786 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:11:28,786 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:11:29,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:11:29,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:11:29,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:11:29,339 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:11:29,340 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:11:29,341 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label09.c [2020-10-29 07:11:29,442 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de7d3e724/3180e0b8c0644d45a7e9f04756838bb4/FLAGb8383eac5 [2020-10-29 07:11:30,675 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:11:30,676 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label09.c [2020-10-29 07:11:30,715 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de7d3e724/3180e0b8c0644d45a7e9f04756838bb4/FLAGb8383eac5 [2020-10-29 07:11:31,003 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de7d3e724/3180e0b8c0644d45a7e9f04756838bb4 [2020-10-29 07:11:31,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:11:31,013 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:11:31,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:11:31,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:11:31,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:11:31,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:11:31" (1/1) ... [2020-10-29 07:11:31,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1770c3f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:11:31, skipping insertion in model container [2020-10-29 07:11:31,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:11:31" (1/1) ... [2020-10-29 07:11:31,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:11:31,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:11:32,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:11:32,946 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:11:33,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:11:33,838 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:11:33,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:11:33 WrapperNode [2020-10-29 07:11:33,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:11:33,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:11:33,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:11:33,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:11:33,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:11:33" (1/1) ... [2020-10-29 07:11:33,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:11:33" (1/1) ... [2020-10-29 07:11:33,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:11:33" (1/1) ... [2020-10-29 07:11:33,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:11:33" (1/1) ... [2020-10-29 07:11:34,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:11:33" (1/1) ... [2020-10-29 07:11:34,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:11:33" (1/1) ... [2020-10-29 07:11:34,225 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:11:33" (1/1) ... [2020-10-29 07:11:34,272 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:11:34,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:11:34,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:11:34,274 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:11:34,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:11:33" (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 07:11:34,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:11:34,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:11:34,364 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:11:34,364 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:11:34,365 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:11:34,365 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:11:34,365 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:11:34,365 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:11:34,366 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:11:34,366 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:11:34,367 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:11:34,367 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:11:34,367 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:11:34,367 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:11:34,368 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:11:34,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:11:34,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:11:34,370 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:11:34,482 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:11:34,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:11:34,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:11:34,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:11:34,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:11:34,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:11:34,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:11:45,485 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:11:45,485 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:11:45,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:11:45 BoogieIcfgContainer [2020-10-29 07:11:45,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:11:45,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:11:45,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:11:45,500 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:11:45,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:11:31" (1/3) ... [2020-10-29 07:11:45,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a67049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:11:45, skipping insertion in model container [2020-10-29 07:11:45,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:11:33" (2/3) ... [2020-10-29 07:11:45,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a67049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:11:45, skipping insertion in model container [2020-10-29 07:11:45,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:11:45" (3/3) ... [2020-10-29 07:11:45,504 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label09.c [2020-10-29 07:11:45,521 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:11:45,528 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:11:45,540 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:11:45,578 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:11:45,579 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:11:45,579 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:11:45,579 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:11:45,579 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:11:45,579 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:11:45,579 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:11:45,579 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:11:45,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-29 07:11:45,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 07:11:45,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:11:45,649 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] [2020-10-29 07:11:45,649 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:11:45,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:11:45,656 INFO L82 PathProgramCache]: Analyzing trace with hash 780075362, now seen corresponding path program 1 times [2020-10-29 07:11:45,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:11:45,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414929531] [2020-10-29 07:11:45,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:11:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:11:46,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:46,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:11:46,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:11:46,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:11:46,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 668 [2020-10-29 07:11:46,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:11:46,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:11:46,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:11:46,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:11:46,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 07:11:46,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:11:46,886 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:11:46,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:11:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:11:46,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:46,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:11:46,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:11:46,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:11:46,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 07:11:46,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:11:46,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:11:46,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:11:46,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:11:46,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:11:46,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:11:46,984 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 07:11:46,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414929531] [2020-10-29 07:11:46,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:11:46,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:11:46,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144502357] [2020-10-29 07:11:46,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:11:46,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:11:47,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:11:47,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:11:47,015 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-10-29 07:11:47,288 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:12:03,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:12:03,751 INFO L93 Difference]: Finished difference Result 3235 states and 5915 transitions. [2020-10-29 07:12:03,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:12:03,755 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-29 07:12:03,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:12:03,804 INFO L225 Difference]: With dead ends: 3235 [2020-10-29 07:12:03,804 INFO L226 Difference]: Without dead ends: 2027 [2020-10-29 07:12:03,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:12:03,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2020-10-29 07:12:04,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 2010. [2020-10-29 07:12:04,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2010 states. [2020-10-29 07:12:04,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 3292 transitions. [2020-10-29 07:12:04,075 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 3292 transitions. Word has length 67 [2020-10-29 07:12:04,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:12:04,077 INFO L481 AbstractCegarLoop]: Abstraction has 2010 states and 3292 transitions. [2020-10-29 07:12:04,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:12:04,077 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 3292 transitions. [2020-10-29 07:12:04,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-29 07:12:04,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:12:04,096 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:12:04,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:12:04,097 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:12:04,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:12:04,099 INFO L82 PathProgramCache]: Analyzing trace with hash 231086441, now seen corresponding path program 1 times [2020-10-29 07:12:04,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:12:04,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995900405] [2020-10-29 07:12:04,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:12:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:12:04,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:04,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:06,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:07,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:12:07,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-29 07:12:07,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:12:07,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2875 [2020-10-29 07:12:07,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:12:07,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:12:07,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:12:07,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 07:12:07,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 07:12:07,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 07:12:07,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:12:07,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:12:07,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:07,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:12:07,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:12:07,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:12:07,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 07:12:07,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:12:07,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:12:07,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:12:07,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:12:07,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:12:07,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:12:07,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:12:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:12:07,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:07,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:12:07,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:12:07,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:12:07,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-29 07:12:07,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:12:07,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:12:07,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:12:07,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:12:07,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:12:07,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:12:07,481 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:12:07,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995900405] [2020-10-29 07:12:07,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:12:07,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:12:07,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927747825] [2020-10-29 07:12:07,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:12:07,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:12:07,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:12:07,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:12:07,486 INFO L87 Difference]: Start difference. First operand 2010 states and 3292 transitions. Second operand 5 states. [2020-10-29 07:12:31,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:12:31,767 INFO L93 Difference]: Finished difference Result 5712 states and 9482 transitions. [2020-10-29 07:12:31,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:12:31,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-29 07:12:31,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:12:31,797 INFO L225 Difference]: With dead ends: 5712 [2020-10-29 07:12:31,798 INFO L226 Difference]: Without dead ends: 3708 [2020-10-29 07:12:31,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:12:31,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3708 states. [2020-10-29 07:12:31,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3708 to 3674. [2020-10-29 07:12:31,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3674 states. [2020-10-29 07:12:31,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3674 states to 3674 states and 5314 transitions. [2020-10-29 07:12:31,933 INFO L78 Accepts]: Start accepts. Automaton has 3674 states and 5314 transitions. Word has length 142 [2020-10-29 07:12:31,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:12:31,935 INFO L481 AbstractCegarLoop]: Abstraction has 3674 states and 5314 transitions. [2020-10-29 07:12:31,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:12:31,935 INFO L276 IsEmpty]: Start isEmpty. Operand 3674 states and 5314 transitions. [2020-10-29 07:12:31,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-29 07:12:31,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:12:31,939 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:12:31,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:12:31,940 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:12:31,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:12:31,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1151158028, now seen corresponding path program 1 times [2020-10-29 07:12:31,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:12:31,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841493948] [2020-10-29 07:12:31,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:12:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:12:32,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:32,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:32,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:32,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:33,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:12:33,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-29 07:12:33,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:12:33,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1610 [2020-10-29 07:12:33,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:12:33,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:12:33,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:12:33,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-29 07:12:33,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 07:12:33,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:12:33,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:12:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:12:33,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:33,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:12:33,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:12:33,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:12:33,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:12:33,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:12:33,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:12:33,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:12:33,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:12:33,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:12:33,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:12:33,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:12:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:12:33,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:33,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:34,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:12:34,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 07:12:34,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:12:34,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-29 07:12:34,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:12:34,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:12:34,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:12:34,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:12:34,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:12:34,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:12:34,115 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:12:34,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841493948] [2020-10-29 07:12:34,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:12:34,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:12:34,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090866114] [2020-10-29 07:12:34,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:12:34,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:12:34,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:12:34,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:12:34,121 INFO L87 Difference]: Start difference. First operand 3674 states and 5314 transitions. Second operand 5 states. [2020-10-29 07:12:58,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:12:58,752 INFO L93 Difference]: Finished difference Result 10645 states and 15586 transitions. [2020-10-29 07:12:58,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:12:58,754 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-29 07:12:58,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:12:58,800 INFO L225 Difference]: With dead ends: 10645 [2020-10-29 07:12:58,800 INFO L226 Difference]: Without dead ends: 6977 [2020-10-29 07:12:58,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:12:58,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6977 states. [2020-10-29 07:12:59,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6977 to 6965. [2020-10-29 07:12:59,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6965 states. [2020-10-29 07:12:59,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6965 states to 6965 states and 9507 transitions. [2020-10-29 07:12:59,049 INFO L78 Accepts]: Start accepts. Automaton has 6965 states and 9507 transitions. Word has length 149 [2020-10-29 07:12:59,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:12:59,050 INFO L481 AbstractCegarLoop]: Abstraction has 6965 states and 9507 transitions. [2020-10-29 07:12:59,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:12:59,051 INFO L276 IsEmpty]: Start isEmpty. Operand 6965 states and 9507 transitions. [2020-10-29 07:12:59,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-29 07:12:59,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:12:59,054 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:12:59,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:12:59,055 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:12:59,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:12:59,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1883125454, now seen corresponding path program 1 times [2020-10-29 07:12:59,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:12:59,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675063134] [2020-10-29 07:12:59,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:12:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:12:59,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:59,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:00,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:00,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:00,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:02,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:13:02,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-29 07:13:02,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:13:02,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3324 [2020-10-29 07:13:02,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:13:02,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:13:02,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:13:02,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:13:02,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-29 07:13:02,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:13:02,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:13:02,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:13:02,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:02,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:13:02,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:13:02,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:13:02,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:13:02,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:13:02,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:13:02,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:13:02,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:13:02,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:13:02,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:13:02,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:13:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:13:02,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:03,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:03,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:13:03,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 07:13:03,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:13:03,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-29 07:13:03,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:13:03,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:13:03,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 07:13:03,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:13:03,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:13:03,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:13:03,315 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:13:03,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675063134] [2020-10-29 07:13:03,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:13:03,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:13:03,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288193780] [2020-10-29 07:13:03,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:13:03,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:13:03,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:13:03,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:13:03,319 INFO L87 Difference]: Start difference. First operand 6965 states and 9507 transitions. Second operand 7 states. [2020-10-29 07:13:04,456 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-29 07:13:05,139 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-10-29 07:13:25,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:13:25,219 INFO L93 Difference]: Finished difference Result 13967 states and 19147 transitions. [2020-10-29 07:13:25,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:13:25,222 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 149 [2020-10-29 07:13:25,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:13:25,268 INFO L225 Difference]: With dead ends: 13967 [2020-10-29 07:13:25,269 INFO L226 Difference]: Without dead ends: 6955 [2020-10-29 07:13:25,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:13:25,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6955 states. [2020-10-29 07:13:25,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6955 to 6950. [2020-10-29 07:13:25,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6950 states. [2020-10-29 07:13:25,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6950 states to 6950 states and 9466 transitions. [2020-10-29 07:13:25,531 INFO L78 Accepts]: Start accepts. Automaton has 6950 states and 9466 transitions. Word has length 149 [2020-10-29 07:13:25,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:13:25,532 INFO L481 AbstractCegarLoop]: Abstraction has 6950 states and 9466 transitions. [2020-10-29 07:13:25,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:13:25,533 INFO L276 IsEmpty]: Start isEmpty. Operand 6950 states and 9466 transitions. [2020-10-29 07:13:25,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-29 07:13:25,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:13:25,538 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:13:25,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:13:25,538 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:13:25,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:13:25,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1527902693, now seen corresponding path program 1 times [2020-10-29 07:13:25,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:13:25,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254125312] [2020-10-29 07:13:25,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:13:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:13:25,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:25,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:26,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:13:26,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-29 07:13:26,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:13:26,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1237 [2020-10-29 07:13:26,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:13:26,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:13:26,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:13:26,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:13:26,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 07:13:26,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:13:27,056 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:13:27,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:13:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:13:27,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:27,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:13:27,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:13:27,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:13:27,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:13:27,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:13:27,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:13:27,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:13:27,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:13:27,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:13:27,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:13:27,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:13:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:13:27,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:27,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:13:27,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 07:13:27,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:13:27,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-29 07:13:27,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:13:27,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:13:27,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:13:27,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:13:27,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:13:27,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:13:27,469 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:13:27,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254125312] [2020-10-29 07:13:27,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:13:27,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:13:27,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317655380] [2020-10-29 07:13:27,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:13:27,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:13:27,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:13:27,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:13:27,473 INFO L87 Difference]: Start difference. First operand 6950 states and 9466 transitions. Second operand 7 states. [2020-10-29 07:13:27,633 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:14:01,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:14:01,604 INFO L93 Difference]: Finished difference Result 17445 states and 24945 transitions. [2020-10-29 07:14:01,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:14:01,606 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 156 [2020-10-29 07:14:01,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:14:01,657 INFO L225 Difference]: With dead ends: 17445 [2020-10-29 07:14:01,657 INFO L226 Difference]: Without dead ends: 10501 [2020-10-29 07:14:01,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:14:01,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10501 states. [2020-10-29 07:14:01,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10501 to 10452. [2020-10-29 07:14:01,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10452 states. [2020-10-29 07:14:01,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10452 states to 10452 states and 13862 transitions. [2020-10-29 07:14:01,991 INFO L78 Accepts]: Start accepts. Automaton has 10452 states and 13862 transitions. Word has length 156 [2020-10-29 07:14:01,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:14:01,991 INFO L481 AbstractCegarLoop]: Abstraction has 10452 states and 13862 transitions. [2020-10-29 07:14:01,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:14:01,992 INFO L276 IsEmpty]: Start isEmpty. Operand 10452 states and 13862 transitions. [2020-10-29 07:14:01,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-29 07:14:01,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:14:01,996 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:14:01,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:14:01,996 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:14:01,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:14:01,997 INFO L82 PathProgramCache]: Analyzing trace with hash -712751441, now seen corresponding path program 1 times [2020-10-29 07:14:01,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:14:01,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562309677] [2020-10-29 07:14:01,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:14:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:02,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:02,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:02,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:03,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:03,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:03,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-29 07:14:03,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:14:03,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1624 [2020-10-29 07:14:03,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:03,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:03,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:14:03,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:14:03,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-29 07:14:03,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:14:03,873 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:14:03,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:14:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:03,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:03,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:03,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:14:03,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:14:03,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:14:03,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:03,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:03,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:14:03,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:14:03,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:14:03,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:14:03,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:14:03,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:04,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:04,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:04,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:04,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:14:04,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:14:04,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 410 [2020-10-29 07:14:04,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:04,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:04,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:14:04,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:14:04,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-29 07:14:04,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:14:04,566 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:14:04,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562309677] [2020-10-29 07:14:04,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:14:04,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:14:04,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672955437] [2020-10-29 07:14:04,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:14:04,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:14:04,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:14:04,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:14:04,570 INFO L87 Difference]: Start difference. First operand 10452 states and 13862 transitions. Second operand 6 states. [2020-10-29 07:14:04,730 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:14:33,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:14:33,815 INFO L93 Difference]: Finished difference Result 26292 states and 36741 transitions. [2020-10-29 07:14:33,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:14:33,818 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 185 [2020-10-29 07:14:33,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:14:33,887 INFO L225 Difference]: With dead ends: 26292 [2020-10-29 07:14:33,887 INFO L226 Difference]: Without dead ends: 15846 [2020-10-29 07:14:33,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:14:33,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15846 states. [2020-10-29 07:14:34,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15846 to 15777. [2020-10-29 07:14:34,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15777 states. [2020-10-29 07:14:34,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15777 states to 15777 states and 21557 transitions. [2020-10-29 07:14:34,398 INFO L78 Accepts]: Start accepts. Automaton has 15777 states and 21557 transitions. Word has length 185 [2020-10-29 07:14:34,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:14:34,399 INFO L481 AbstractCegarLoop]: Abstraction has 15777 states and 21557 transitions. [2020-10-29 07:14:34,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:14:34,399 INFO L276 IsEmpty]: Start isEmpty. Operand 15777 states and 21557 transitions. [2020-10-29 07:14:34,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-29 07:14:34,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:14:34,407 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:14:34,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:14:34,408 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:14:34,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:14:34,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1755230475, now seen corresponding path program 1 times [2020-10-29 07:14:34,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:14:34,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302770692] [2020-10-29 07:14:34,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:14:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:34,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:34,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:35,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:36,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:39,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:39,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-29 07:14:39,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:14:39,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 07:14:39,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:39,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:39,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:14:39,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:14:39,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-29 07:14:39,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:14:39,654 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:14:39,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:14:39,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:39,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:39,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:39,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:14:39,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:14:39,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:14:39,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:39,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:39,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:14:39,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:14:39,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:14:39,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:14:39,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:14:39,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:39,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:39,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:39,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:39,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 07:14:39,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:14:39,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-29 07:14:39,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:39,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:39,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:14:39,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:14:39,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 07:14:39,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:14:40,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-29 07:14:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:40,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:40,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:40,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 07:14:40,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:14:40,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-29 07:14:40,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:40,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:40,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:14:40,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:14:40,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:14:40,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:14:40,593 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 201 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:14:40,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302770692] [2020-10-29 07:14:40,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:14:40,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:14:40,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290584435] [2020-10-29 07:14:40,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:14:40,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:14:40,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:14:40,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:14:40,598 INFO L87 Difference]: Start difference. First operand 15777 states and 21557 transitions. Second operand 8 states. [2020-10-29 07:14:40,753 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:15:09,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:15:09,156 INFO L93 Difference]: Finished difference Result 47376 states and 69270 transitions. [2020-10-29 07:15:09,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:15:09,163 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 246 [2020-10-29 07:15:09,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:15:09,315 INFO L225 Difference]: With dead ends: 47376 [2020-10-29 07:15:09,315 INFO L226 Difference]: Without dead ends: 31605 [2020-10-29 07:15:09,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:15:09,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31605 states. [2020-10-29 07:15:10,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31605 to 31423. [2020-10-29 07:15:10,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31423 states. [2020-10-29 07:15:10,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31423 states to 31423 states and 42230 transitions. [2020-10-29 07:15:10,424 INFO L78 Accepts]: Start accepts. Automaton has 31423 states and 42230 transitions. Word has length 246 [2020-10-29 07:15:10,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:15:10,425 INFO L481 AbstractCegarLoop]: Abstraction has 31423 states and 42230 transitions. [2020-10-29 07:15:10,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:15:10,425 INFO L276 IsEmpty]: Start isEmpty. Operand 31423 states and 42230 transitions. [2020-10-29 07:15:10,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-29 07:15:10,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:15:10,434 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:10,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:15:10,434 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:15:10,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:15:10,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1534465612, now seen corresponding path program 1 times [2020-10-29 07:15:10,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:15:10,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739767002] [2020-10-29 07:15:10,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:15:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:15:10,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:11,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:12,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:15:12,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-29 07:15:12,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:15:12,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2016 [2020-10-29 07:15:12,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:15:12,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:15:12,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:15:12,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:15:12,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-29 07:15:12,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:15:12,715 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:15:12,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:15:12,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:15:12,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:12,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:15:12,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:15:12,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:15:12,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:15:12,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:15:12,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:15:12,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:15:12,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:15:12,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:15:12,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:15:12,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:15:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:15:12,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:13,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:15:13,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-29 07:15:13,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:15:13,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 415 [2020-10-29 07:15:13,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:15:13,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:15:13,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:15:13,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:15:13,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-29 07:15:13,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:15:13,532 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:15:13,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739767002] [2020-10-29 07:15:13,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:15:13,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:15:13,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891654499] [2020-10-29 07:15:13,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:15:13,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:15:13,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:15:13,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:15:13,540 INFO L87 Difference]: Start difference. First operand 31423 states and 42230 transitions. Second operand 7 states. [2020-10-29 07:15:13,711 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:15:18,416 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 66