/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/Problem12_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 06:59:59,176 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 06:59:59,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 06:59:59,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 06:59:59,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 06:59:59,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 06:59:59,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 06:59:59,263 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 06:59:59,267 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 06:59:59,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 06:59:59,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 06:59:59,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 06:59:59,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 06:59:59,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 06:59:59,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 06:59:59,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 06:59:59,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 06:59:59,293 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 06:59:59,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 06:59:59,311 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 06:59:59,313 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 06:59:59,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 06:59:59,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 06:59:59,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 06:59:59,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 06:59:59,330 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 06:59:59,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 06:59:59,333 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 06:59:59,333 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 06:59:59,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 06:59:59,335 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 06:59:59,336 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 06:59:59,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 06:59:59,339 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 06:59:59,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 06:59:59,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 06:59:59,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 06:59:59,342 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 06:59:59,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 06:59:59,344 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 06:59:59,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 06:59:59,354 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 06:59:59,418 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 06:59:59,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 06:59:59,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 06:59:59,423 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 06:59:59,423 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 06:59:59,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 06:59:59,424 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 06:59:59,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 06:59:59,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 06:59:59,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 06:59:59,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 06:59:59,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 06:59:59,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 06:59:59,426 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 06:59:59,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 06:59:59,427 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 06:59:59,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 06:59:59,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 06:59:59,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 06:59:59,428 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 06:59:59,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 06:59:59,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:59:59,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 06:59:59,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 06:59:59,429 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 06:59:59,429 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 06:59:59,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 06:59:59,430 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 06:59:59,430 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 06:59:59,430 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 06:59:59,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 06:59:59,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 06:59:59,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 06:59:59,947 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 06:59:59,951 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 06:59:59,952 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label27.c [2020-10-29 07:00:00,040 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d92a7c740/8cd07772182a4f4db0ace614971765fa/FLAG2350e7cb0 [2020-10-29 07:00:01,087 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:00:01,088 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label27.c [2020-10-29 07:00:01,127 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d92a7c740/8cd07772182a4f4db0ace614971765fa/FLAG2350e7cb0 [2020-10-29 07:00:01,623 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d92a7c740/8cd07772182a4f4db0ace614971765fa [2020-10-29 07:00:01,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:00:01,636 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:00:01,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:00:01,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:00:01,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:00:01,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:00:01" (1/1) ... [2020-10-29 07:00:01,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@407f7f84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:00:01, skipping insertion in model container [2020-10-29 07:00:01,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:00:01" (1/1) ... [2020-10-29 07:00:01,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:00:01,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:00:03,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:00:03,211 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:00:03,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:00:04,014 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:00:04,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:00:04 WrapperNode [2020-10-29 07:00:04,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:00:04,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:00:04,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:00:04,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:00:04,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:00:04" (1/1) ... [2020-10-29 07:00:04,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:00:04" (1/1) ... [2020-10-29 07:00:04,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:00:04" (1/1) ... [2020-10-29 07:00:04,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:00:04" (1/1) ... [2020-10-29 07:00:04,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:00:04" (1/1) ... [2020-10-29 07:00:04,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:00:04" (1/1) ... [2020-10-29 07:00:04,389 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:00:04" (1/1) ... [2020-10-29 07:00:04,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:00:04,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:00:04,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:00:04,446 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:00:04,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:00:04" (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 07:00:04,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:00:04,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:00:04,533 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:00:04,534 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:00:04,534 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:00:04,534 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:00:04,534 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:00:04,535 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:00:04,535 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:00:04,535 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:00:04,536 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:00:04,536 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:00:04,536 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:00:04,536 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:00:04,537 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:00:04,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:00:04,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:00:04,538 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:00:04,538 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:00:04,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:00:04,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:00:04,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:00:04,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:00:04,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:00:04,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:00:11,473 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:00:11,474 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:00:11,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:00:11 BoogieIcfgContainer [2020-10-29 07:00:11,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:00:11,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:00:11,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:00:11,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:00:11,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:00:01" (1/3) ... [2020-10-29 07:00:11,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29da5d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:00:11, skipping insertion in model container [2020-10-29 07:00:11,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:00:04" (2/3) ... [2020-10-29 07:00:11,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29da5d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:00:11, skipping insertion in model container [2020-10-29 07:00:11,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:00:11" (3/3) ... [2020-10-29 07:00:11,488 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label27.c [2020-10-29 07:00:11,502 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:00:11,508 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:00:11,524 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:00:11,562 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:00:11,562 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:00:11,563 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:00:11,563 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:00:11,563 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:00:11,563 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:00:11,563 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:00:11,563 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:00:11,601 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-29 07:00:11,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 07:00:11,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:00:11,611 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] [2020-10-29 07:00:11,611 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:00:11,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:00:11,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1992184844, now seen corresponding path program 1 times [2020-10-29 07:00:11,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:00:11,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351440135] [2020-10-29 07:00:11,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:00:11,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:11,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:12,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:12,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 07:00:12,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:12,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 578 [2020-10-29 07:00:12,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:12,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:12,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:00:12,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:00:12,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 07:00:12,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:00:12,617 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:00:12,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:00:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:12,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:12,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:12,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:00:12,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:12,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 07:00:12,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:12,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:12,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:00:12,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:00:12,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:00:12,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:00:12,680 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 07:00:12,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351440135] [2020-10-29 07:00:12,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:00:12,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:00:12,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156779761] [2020-10-29 07:00:12,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:00:12,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:00:12,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:00:12,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:00:12,714 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-29 07:00:12,914 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:00:27,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:00:27,402 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-29 07:00:27,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:00:27,405 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-29 07:00:27,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:00:27,441 INFO L225 Difference]: With dead ends: 2476 [2020-10-29 07:00:27,441 INFO L226 Difference]: Without dead ends: 1569 [2020-10-29 07:00:27,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:00:27,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-29 07:00:27,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-29 07:00:27,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-29 07:00:27,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2834 transitions. [2020-10-29 07:00:27,663 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2834 transitions. Word has length 38 [2020-10-29 07:00:27,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:00:27,664 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2834 transitions. [2020-10-29 07:00:27,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:00:27,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2834 transitions. [2020-10-29 07:00:27,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-29 07:00:27,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:00:27,676 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:00:27,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:00:27,677 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:00:27,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:00:27,678 INFO L82 PathProgramCache]: Analyzing trace with hash 77970902, now seen corresponding path program 1 times [2020-10-29 07:00:27,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:00:27,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378494239] [2020-10-29 07:00:27,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:00:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:27,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:28,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:28,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:28,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 07:00:28,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:00:28,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1198 [2020-10-29 07:00:28,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:28,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:28,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:00:28,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:00:28,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 07:00:28,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:00:29,142 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:00:29,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:00:29,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:29,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:29,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:29,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:00:29,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:29,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:00:29,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:29,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:29,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:00:29,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:00:29,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:00:29,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:00:29,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:00:29,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:29,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:29,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:29,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:00:29,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:29,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-29 07:00:29,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:29,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:29,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:00:29,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:00:29,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 07:00:29,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:00:29,528 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:00:29,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378494239] [2020-10-29 07:00:29,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:00:29,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:00:29,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063671489] [2020-10-29 07:00:29,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:00:29,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:00:29,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:00:29,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:00:29,537 INFO L87 Difference]: Start difference. First operand 1554 states and 2834 transitions. Second operand 7 states. [2020-10-29 07:00:29,692 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:00:32,383 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:00:48,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:00:48,622 INFO L93 Difference]: Finished difference Result 4740 states and 8695 transitions. [2020-10-29 07:00:48,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:00:48,623 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2020-10-29 07:00:48,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:00:48,648 INFO L225 Difference]: With dead ends: 4740 [2020-10-29 07:00:48,648 INFO L226 Difference]: Without dead ends: 3192 [2020-10-29 07:00:48,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:00:48,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3192 states. [2020-10-29 07:00:48,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3192 to 3137. [2020-10-29 07:00:48,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3137 states. [2020-10-29 07:00:48,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3137 states to 3137 states and 4989 transitions. [2020-10-29 07:00:48,809 INFO L78 Accepts]: Start accepts. Automaton has 3137 states and 4989 transitions. Word has length 111 [2020-10-29 07:00:48,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:00:48,810 INFO L481 AbstractCegarLoop]: Abstraction has 3137 states and 4989 transitions. [2020-10-29 07:00:48,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:00:48,811 INFO L276 IsEmpty]: Start isEmpty. Operand 3137 states and 4989 transitions. [2020-10-29 07:00:48,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-29 07:00:48,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:00:48,814 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:00:48,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:00:48,814 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:00:48,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:00:48,815 INFO L82 PathProgramCache]: Analyzing trace with hash 726256786, now seen corresponding path program 1 times [2020-10-29 07:00:48,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:00:48,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038919349] [2020-10-29 07:00:48,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:00:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:48,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:48,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:49,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:49,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 07:00:49,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:00:49,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 798 [2020-10-29 07:00:49,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:49,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:49,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:00:49,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:00:49,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 07:00:49,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:00:49,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:00:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:49,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:49,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:49,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:00:49,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:49,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:00:49,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:49,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:49,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:00:49,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:00:49,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:00:49,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:49,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:00:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:49,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:50,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:50,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:00:50,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:50,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-29 07:00:50,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:50,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:50,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:00:50,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:00:50,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:00:50,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:50,170 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:00:50,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038919349] [2020-10-29 07:00:50,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:00:50,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:00:50,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517004083] [2020-10-29 07:00:50,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:00:50,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:00:50,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:00:50,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:00:50,175 INFO L87 Difference]: Start difference. First operand 3137 states and 4989 transitions. Second operand 6 states. [2020-10-29 07:00:50,377 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 07:01:08,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:01:08,758 INFO L93 Difference]: Finished difference Result 9573 states and 15644 transitions. [2020-10-29 07:01:08,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:01:08,761 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2020-10-29 07:01:08,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:01:08,803 INFO L225 Difference]: With dead ends: 9573 [2020-10-29 07:01:08,804 INFO L226 Difference]: Without dead ends: 6442 [2020-10-29 07:01:08,815 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 07:01:08,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6442 states. [2020-10-29 07:01:09,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6442 to 6370. [2020-10-29 07:01:09,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6370 states. [2020-10-29 07:01:09,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6370 states to 6370 states and 9101 transitions. [2020-10-29 07:01:09,114 INFO L78 Accepts]: Start accepts. Automaton has 6370 states and 9101 transitions. Word has length 113 [2020-10-29 07:01:09,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:01:09,115 INFO L481 AbstractCegarLoop]: Abstraction has 6370 states and 9101 transitions. [2020-10-29 07:01:09,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:01:09,115 INFO L276 IsEmpty]: Start isEmpty. Operand 6370 states and 9101 transitions. [2020-10-29 07:01:09,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-29 07:01:09,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:01:09,118 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:01:09,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:01:09,118 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:01:09,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:01:09,119 INFO L82 PathProgramCache]: Analyzing trace with hash -957843906, now seen corresponding path program 1 times [2020-10-29 07:01:09,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:01:09,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907762816] [2020-10-29 07:01:09,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:01:09,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:09,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:09,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:09,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:09,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 07:01:09,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:01:09,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 731 [2020-10-29 07:01:09,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:09,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:09,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:01:09,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:01:09,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 07:01:09,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:10,049 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:01:10,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:01:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:10,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:10,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:10,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:01:10,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:10,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:01:10,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:10,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:10,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:01:10,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:01:10,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:01:10,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:10,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:01:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:10,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:10,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:10,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 07:01:10,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:10,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-29 07:01:10,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:10,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:10,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:01:10,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:01:10,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:01:10,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:10,407 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:01:10,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907762816] [2020-10-29 07:01:10,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:01:10,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:01:10,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053016756] [2020-10-29 07:01:10,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:01:10,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:01:10,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:01:10,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:01:10,421 INFO L87 Difference]: Start difference. First operand 6370 states and 9101 transitions. Second operand 7 states. [2020-10-29 07:01:10,591 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:01:13,501 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:01:34,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:01:34,134 INFO L93 Difference]: Finished difference Result 19476 states and 28534 transitions. [2020-10-29 07:01:34,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:01:34,137 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-10-29 07:01:34,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:01:34,213 INFO L225 Difference]: With dead ends: 19476 [2020-10-29 07:01:34,214 INFO L226 Difference]: Without dead ends: 13112 [2020-10-29 07:01:34,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:01:34,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13112 states. [2020-10-29 07:01:34,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13112 to 12090. [2020-10-29 07:01:34,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12090 states. [2020-10-29 07:01:34,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12090 states to 12090 states and 16640 transitions. [2020-10-29 07:01:34,744 INFO L78 Accepts]: Start accepts. Automaton has 12090 states and 16640 transitions. Word has length 123 [2020-10-29 07:01:34,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:01:34,746 INFO L481 AbstractCegarLoop]: Abstraction has 12090 states and 16640 transitions. [2020-10-29 07:01:34,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:01:34,747 INFO L276 IsEmpty]: Start isEmpty. Operand 12090 states and 16640 transitions. [2020-10-29 07:01:34,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-29 07:01:34,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:01:34,752 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:01:34,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:01:34,753 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:01:34,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:01:34,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1865825980, now seen corresponding path program 1 times [2020-10-29 07:01:34,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:01:34,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611498821] [2020-10-29 07:01:34,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:01:34,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:34,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:35,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:36,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:36,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-29 07:01:36,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:01:36,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1421 [2020-10-29 07:01:36,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:36,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:36,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:01:36,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:01:36,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:01:36,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:01:36,385 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:01:36,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:01:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:36,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:36,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:36,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:01:36,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:36,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:01:36,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:36,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:36,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:01:36,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:01:36,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:01:36,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:36,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:01:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:36,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:36,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:36,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 07:01:36,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:36,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-29 07:01:36,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:36,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:36,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:01:36,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:01:36,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 07:01:36,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:01:36,941 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:01:36,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611498821] [2020-10-29 07:01:36,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:01:36,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:01:36,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330521568] [2020-10-29 07:01:36,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:01:36,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:01:36,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:01:36,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:01:36,945 INFO L87 Difference]: Start difference. First operand 12090 states and 16640 transitions. Second operand 7 states. [2020-10-29 07:01:37,111 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:01:41,833 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 07:02:00,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:02:00,439 INFO L93 Difference]: Finished difference Result 35084 states and 50906 transitions. [2020-10-29 07:02:00,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:02:00,441 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-10-29 07:02:00,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:02:00,583 INFO L225 Difference]: With dead ends: 35084 [2020-10-29 07:02:00,583 INFO L226 Difference]: Without dead ends: 23000 [2020-10-29 07:02:00,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:02:00,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23000 states. [2020-10-29 07:02:01,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23000 to 22051. [2020-10-29 07:02:01,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22051 states. [2020-10-29 07:02:01,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22051 states to 22051 states and 31244 transitions. [2020-10-29 07:02:01,488 INFO L78 Accepts]: Start accepts. Automaton has 22051 states and 31244 transitions. Word has length 146 [2020-10-29 07:02:01,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:02:01,489 INFO L481 AbstractCegarLoop]: Abstraction has 22051 states and 31244 transitions. [2020-10-29 07:02:01,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:02:01,489 INFO L276 IsEmpty]: Start isEmpty. Operand 22051 states and 31244 transitions. [2020-10-29 07:02:01,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-29 07:02:01,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:02:01,498 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, 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] [2020-10-29 07:02:01,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:02:01,499 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:02:01,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:02:01,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1377466970, now seen corresponding path program 1 times [2020-10-29 07:02:01,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:02:01,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126367364] [2020-10-29 07:02:01,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:02:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:01,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:01,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:02,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:03,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:04,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:04,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-29 07:02:04,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:02:04,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2640 [2020-10-29 07:02:04,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:04,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:04,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:02:04,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 07:02:04,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 07:02:04,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:02:04,540 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:02:04,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:02:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:04,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:04,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:04,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:02:04,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:04,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:02:04,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:04,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:04,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:02:04,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:02:04,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:02:04,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:04,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:02:04,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:04,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:04,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:04,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:02:04,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:04,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-29 07:02:04,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:04,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:04,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:02:04,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:02:04,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:02:04,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:04,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 07:02:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:04,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:05,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:05,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 07:02:05,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:05,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-29 07:02:05,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:05,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:05,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:02:05,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:02:05,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 07:02:05,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:02:05,175 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:02:05,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126367364] [2020-10-29 07:02:05,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:02:05,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:02:05,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566789958] [2020-10-29 07:02:05,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:02:05,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:02:05,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:02:05,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:02:05,181 INFO L87 Difference]: Start difference. First operand 22051 states and 31244 transitions. Second operand 7 states. [2020-10-29 07:02:06,049 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:02:20,883 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:02:42,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:02:42,702 INFO L93 Difference]: Finished difference Result 55755 states and 82967 transitions. [2020-10-29 07:02:42,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:02:42,706 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 221 [2020-10-29 07:02:42,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:02:42,985 INFO L225 Difference]: With dead ends: 55755 [2020-10-29 07:02:42,986 INFO L226 Difference]: Without dead ends: 32072 [2020-10-29 07:02:43,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:02:43,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32072 states. [2020-10-29 07:02:43,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32072 to 30431. [2020-10-29 07:02:43,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30431 states. [2020-10-29 07:02:44,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30431 states to 30431 states and 39601 transitions. [2020-10-29 07:02:44,072 INFO L78 Accepts]: Start accepts. Automaton has 30431 states and 39601 transitions. Word has length 221 [2020-10-29 07:02:44,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:02:44,073 INFO L481 AbstractCegarLoop]: Abstraction has 30431 states and 39601 transitions. [2020-10-29 07:02:44,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:02:44,073 INFO L276 IsEmpty]: Start isEmpty. Operand 30431 states and 39601 transitions. [2020-10-29 07:02:44,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-29 07:02:44,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:02:44,079 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, 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] [2020-10-29 07:02:44,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:02:44,080 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:02:44,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:02:44,081 INFO L82 PathProgramCache]: Analyzing trace with hash -2131365632, now seen corresponding path program 1 times [2020-10-29 07:02:44,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:02:44,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109501946] [2020-10-29 07:02:44,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:02:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:44,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:44,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:46,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:46,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-29 07:02:46,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:02:46,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1978 [2020-10-29 07:02:46,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:46,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:46,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:02:46,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-29 07:02:46,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 07:02:46,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:02:46,378 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:02:46,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:02:46,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:46,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:46,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:46,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:02:46,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:46,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:02:46,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:46,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:46,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:02:46,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:02:46,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:02:46,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:02:46,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:02:46,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:46,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:46,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:46,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 07:02:46,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:46,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-29 07:02:46,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:46,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:46,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:02:46,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:02:46,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 07:02:46,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:46,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 07:02:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:46,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:46,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:46,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:02:46,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:46,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-29 07:02:46,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:46,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:46,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:02:46,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:02:46,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:02:46,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:47,028 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:02:47,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109501946] [2020-10-29 07:02:47,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:02:47,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:02:47,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438214500] [2020-10-29 07:02:47,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:02:47,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:02:47,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:02:47,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:02:47,032 INFO L87 Difference]: Start difference. First operand 30431 states and 39601 transitions. Second operand 7 states. [2020-10-29 07:02:48,700 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 07:02:52,220 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 07:03:21,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:03:21,046 INFO L93 Difference]: Finished difference Result 73160 states and 113716 transitions. [2020-10-29 07:03:21,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:03:21,049 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 258 [2020-10-29 07:03:21,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:03:21,414 INFO L225 Difference]: With dead ends: 73160 [2020-10-29 07:03:21,415 INFO L226 Difference]: Without dead ends: 42739 [2020-10-29 07:03:21,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:03:21,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42739 states. [2020-10-29 07:03:23,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42739 to 39513. [2020-10-29 07:03:23,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39513 states. [2020-10-29 07:03:23,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39513 states to 39513 states and 54483 transitions. [2020-10-29 07:03:23,367 INFO L78 Accepts]: Start accepts. Automaton has 39513 states and 54483 transitions. Word has length 258 [2020-10-29 07:03:23,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:03:23,369 INFO L481 AbstractCegarLoop]: Abstraction has 39513 states and 54483 transitions. [2020-10-29 07:03:23,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:03:23,369 INFO L276 IsEmpty]: Start isEmpty. Operand 39513 states and 54483 transitions. [2020-10-29 07:03:23,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-29 07:03:23,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:03:23,375 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, 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] [2020-10-29 07:03:23,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:03:23,375 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:03:23,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:03:23,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1693653154, now seen corresponding path program 1 times [2020-10-29 07:03:23,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:03:23,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654327982] [2020-10-29 07:03:23,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:03:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:23,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:23,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:27,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:27,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-29 07:03:27,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:03:27,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3570 [2020-10-29 07:03:27,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:27,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:27,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:03:27,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:03:27,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 07:03:27,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:03:27,494 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:03:27,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:03:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:27,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:27,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:27,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:03:27,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:03:27,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 07:03:27,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:27,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:27,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:03:27,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:03:27,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:03:27,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:03:27,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:03:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:27,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:27,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:27,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 07:03:27,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:03:27,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-10-29 07:03:27,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:27,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:27,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:03:27,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:03:27,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 07:03:27,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:03:28,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-29 07:03:28,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:28,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:28,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:28,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:03:28,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:03:28,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 07:03:28,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:28,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:28,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:03:28,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 07:03:28,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:03:28,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:03:28,620 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 60 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:03:28,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654327982] [2020-10-29 07:03:28,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:03:28,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:03:28,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930741322] [2020-10-29 07:03:28,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:03:28,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:03:28,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:03:28,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:03:28,624 INFO L87 Difference]: Start difference. First operand 39513 states and 54483 transitions. Second operand 7 states. [2020-10-29 07:03:28,831 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-29 07:03:31,920 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-29 07:03:52,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:03:52,090 INFO L93 Difference]: Finished difference Result 79315 states and 110346 transitions. [2020-10-29 07:03:52,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:03:52,092 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 259 [2020-10-29 07:03:52,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:03:52,275 INFO L225 Difference]: With dead ends: 79315 [2020-10-29 07:03:52,275 INFO L226 Difference]: Without dead ends: 39812 [2020-10-29 07:03:52,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:03:52,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39812 states.