/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=DEEPEST --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/Problem06_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 16:32:50,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 16:32:50,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 16:32:50,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 16:32:50,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 16:32:50,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 16:32:50,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 16:32:50,484 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 16:32:50,486 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 16:32:50,487 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 16:32:50,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 16:32:50,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 16:32:50,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 16:32:50,492 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 16:32:50,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 16:32:50,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 16:32:50,495 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 16:32:50,496 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 16:32:50,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 16:32:50,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 16:32:50,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 16:32:50,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 16:32:50,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 16:32:50,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 16:32:50,523 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 16:32:50,526 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 16:32:50,526 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 16:32:50,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 16:32:50,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 16:32:50,531 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 16:32:50,532 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 16:32:50,533 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 16:32:50,537 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 16:32:50,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 16:32:50,540 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 16:32:50,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 16:32:50,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 16:32:50,542 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 16:32:50,542 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 16:32:50,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 16:32:50,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 16:32:50,546 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 [2020-10-27 16:32:50,594 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 16:32:50,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 16:32:50,599 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 16:32:50,599 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 16:32:50,599 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 16:32:50,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 16:32:50,600 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 16:32:50,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 16:32:50,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 16:32:50,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 16:32:50,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 16:32:50,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 16:32:50,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 16:32:50,601 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 16:32:50,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 16:32:50,602 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 16:32:50,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 16:32:50,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 16:32:50,602 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 16:32:50,603 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 16:32:50,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 16:32:50,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:32:50,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 16:32:50,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 16:32:50,604 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 16:32:50,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 16:32:50,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 16:32:50,604 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 16:32:50,605 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 16:32:50,605 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 16:32:50,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 16:32:50,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 16:32:51,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 16:32:51,003 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 16:32:51,003 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 16:32:51,005 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label37.c [2020-10-27 16:32:51,083 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf96333fd/33732d78fcd0421bb8f6f2467bdb319e/FLAG8de10fc34 [2020-10-27 16:32:52,517 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 16:32:52,518 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label37.c [2020-10-27 16:32:52,588 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf96333fd/33732d78fcd0421bb8f6f2467bdb319e/FLAG8de10fc34 [2020-10-27 16:32:53,082 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf96333fd/33732d78fcd0421bb8f6f2467bdb319e [2020-10-27 16:32:53,086 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 16:32:53,092 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 16:32:53,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 16:32:53,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 16:32:53,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 16:32:53,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:32:53" (1/1) ... [2020-10-27 16:32:53,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79f177e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:53, skipping insertion in model container [2020-10-27 16:32:53,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:32:53" (1/1) ... [2020-10-27 16:32:53,111 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 16:32:53,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 16:32:55,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:32:55,471 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 16:32:56,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:32:56,735 INFO L208 MainTranslator]: Completed translation [2020-10-27 16:32:56,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:56 WrapperNode [2020-10-27 16:32:56,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 16:32:56,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 16:32:56,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 16:32:56,737 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 16:32:56,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:56" (1/1) ... [2020-10-27 16:32:56,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:56" (1/1) ... [2020-10-27 16:32:56,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:56" (1/1) ... [2020-10-27 16:32:56,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:56" (1/1) ... [2020-10-27 16:32:57,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:56" (1/1) ... [2020-10-27 16:32:57,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:56" (1/1) ... [2020-10-27 16:32:57,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:56" (1/1) ... [2020-10-27 16:32:57,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 16:32:57,207 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 16:32:57,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 16:32:57,208 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 16:32:57,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:56" (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 [2020-10-27 16:32:57,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 16:32:57,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 16:32:57,454 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 16:32:57,454 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 16:32:57,454 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 16:32:57,454 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 16:32:57,455 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 16:32:57,455 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-27 16:32:57,455 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 16:32:57,455 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 16:32:57,456 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 16:32:57,457 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 16:32:57,457 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 16:32:57,457 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-27 16:32:57,458 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 16:32:57,459 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 16:32:57,459 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 16:32:57,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 16:32:57,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 16:32:57,459 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 16:32:57,460 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 16:32:57,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 16:32:57,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 16:32:57,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 16:32:57,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 16:32:57,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 16:32:57,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 16:33:08,981 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 16:33:08,984 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 16:33:08,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:33:08 BoogieIcfgContainer [2020-10-27 16:33:08,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 16:33:08,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 16:33:08,993 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 16:33:08,998 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 16:33:08,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:32:53" (1/3) ... [2020-10-27 16:33:09,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa3c6b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:33:08, skipping insertion in model container [2020-10-27 16:33:09,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:32:56" (2/3) ... [2020-10-27 16:33:09,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa3c6b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:33:09, skipping insertion in model container [2020-10-27 16:33:09,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:33:08" (3/3) ... [2020-10-27 16:33:09,002 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label37.c [2020-10-27 16:33:09,014 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 16:33:09,021 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 16:33:09,035 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 16:33:09,070 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 16:33:09,070 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 16:33:09,070 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 16:33:09,070 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 16:33:09,070 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 16:33:09,071 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 16:33:09,071 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 16:33:09,071 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 16:33:09,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states. [2020-10-27 16:33:09,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 956 [2020-10-27 16:33:09,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:33:09,172 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:33:09,173 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:33:09,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:33:09,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1900116780, now seen corresponding path program 1 times [2020-10-27 16:33:09,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:33:09,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075732051] [2020-10-27 16:33:09,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:33:10,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:33:11,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:33:13,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:33:15,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:33:15,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 973 [2020-10-27 16:33:15,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:33:15,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5166 [2020-10-27 16:33:15,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:33:15,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 16:33:15,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:33:15,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-27 16:33:15,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 16:33:19,817 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2020-10-27 16:33:20,272 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 68 [2020-10-27 16:33:20,680 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2020-10-27 16:33:21,192 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-10-27 16:33:21,681 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2020-10-27 16:33:22,131 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-10-27 16:33:22,557 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-10-27 16:33:23,018 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2020-10-27 16:33:23,364 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-10-27 16:33:23,723 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2020-10-27 16:33:24,067 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-27 16:33:25,111 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:33:25,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:33:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:33:25,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:33:25,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:33:25,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:33:25,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:33:25,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 16:33:25,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:33:25,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:33:25,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:33:25,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:33:25,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:33:38,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:33:38,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075732051] [2020-10-27 16:33:38,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:33:38,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-27 16:33:38,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846080518] [2020-10-27 16:33:38,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 16:33:38,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:33:38,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 16:33:38,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-27 16:33:38,494 INFO L87 Difference]: Start difference. First operand 1319 states. Second operand 18 states. [2020-10-27 16:33:39,523 WARN L193 SmtUtils]: Spent 842.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 16:33:41,513 WARN L193 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 204 DAG size of output: 197 [2020-10-27 16:33:43,317 WARN L193 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 204 DAG size of output: 197 [2020-10-27 16:33:45,288 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 217 DAG size of output: 205 [2020-10-27 16:33:51,901 WARN L193 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 239 DAG size of output: 204 [2020-10-27 16:33:58,380 WARN L193 SmtUtils]: Spent 3.01 s on a formula simplification. DAG size of input: 242 DAG size of output: 203 [2020-10-27 16:34:02,990 WARN L193 SmtUtils]: Spent 1.85 s on a formula simplification. DAG size of input: 217 DAG size of output: 194 [2020-10-27 16:34:05,309 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 229 DAG size of output: 204 [2020-10-27 16:34:07,988 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 226 DAG size of output: 201 [2020-10-27 16:34:23,361 WARN L193 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 210 DAG size of output: 192 [2020-10-27 16:34:25,348 WARN L193 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 218 DAG size of output: 197 [2020-10-27 16:34:30,946 WARN L193 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 216 DAG size of output: 196 [2020-10-27 16:34:42,858 WARN L193 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 207 DAG size of output: 190 [2020-10-27 16:34:44,887 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 213 DAG size of output: 194 [2020-10-27 16:34:49,431 WARN L193 SmtUtils]: Spent 1.85 s on a formula simplification. DAG size of input: 209 DAG size of output: 192 [2020-10-27 16:35:09,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:35:09,049 INFO L93 Difference]: Finished difference Result 3401 states and 6365 transitions. [2020-10-27 16:35:09,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 16:35:09,051 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 955 [2020-10-27 16:35:09,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:35:09,104 INFO L225 Difference]: With dead ends: 3401 [2020-10-27 16:35:09,104 INFO L226 Difference]: Without dead ends: 2020 [2020-10-27 16:35:09,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 34.7s TimeCoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 16:35:09,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2020-10-27 16:35:09,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 2020. [2020-10-27 16:35:09,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2020 states. [2020-10-27 16:35:09,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 3054 transitions. [2020-10-27 16:35:09,318 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 3054 transitions. Word has length 955 [2020-10-27 16:35:09,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:35:09,320 INFO L481 AbstractCegarLoop]: Abstraction has 2020 states and 3054 transitions. [2020-10-27 16:35:09,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 16:35:09,321 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 3054 transitions. [2020-10-27 16:35:09,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1026 [2020-10-27 16:35:09,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:35:09,366 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:35:09,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 16:35:09,367 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:35:09,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:35:09,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1664452757, now seen corresponding path program 1 times [2020-10-27 16:35:09,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:35:09,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750824127] [2020-10-27 16:35:09,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:35:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:35:09,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:35:11,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:35:14,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:35:14,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1045 [2020-10-27 16:35:14,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:35:14,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-27 16:35:14,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:35:14,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 16:35:14,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 16:35:14,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 961 [2020-10-27 16:35:14,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:35:15,770 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:35:15,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:35:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:35:15,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:35:15,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:35:15,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:35:15,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:35:15,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 16:35:15,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:35:15,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:35:15,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:35:15,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:35:15,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:35:15,978 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 16:35:15,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:35:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:35:16,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:35:16,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:35:16,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:35:16,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:35:16,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-27 16:35:16,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:35:16,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:35:16,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:35:16,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 16:35:16,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:35:17,215 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 66 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:35:17,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750824127] [2020-10-27 16:35:17,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:35:17,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 16:35:17,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105460839] [2020-10-27 16:35:17,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:35:17,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:35:17,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:35:17,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:35:17,221 INFO L87 Difference]: Start difference. First operand 2020 states and 3054 transitions. Second operand 5 states. [2020-10-27 16:35:18,110 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:35:42,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:35:42,651 INFO L93 Difference]: Finished difference Result 4399 states and 7437 transitions. [2020-10-27 16:35:42,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:35:42,653 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1025 [2020-10-27 16:35:42,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:35:42,674 INFO L225 Difference]: With dead ends: 4399 [2020-10-27 16:35:42,674 INFO L226 Difference]: Without dead ends: 3139 [2020-10-27 16:35:42,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:35:42,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2020-10-27 16:35:42,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 3088. [2020-10-27 16:35:42,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3088 states. [2020-10-27 16:35:42,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3088 states to 3088 states and 4567 transitions. [2020-10-27 16:35:42,775 INFO L78 Accepts]: Start accepts. Automaton has 3088 states and 4567 transitions. Word has length 1025 [2020-10-27 16:35:42,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:35:42,777 INFO L481 AbstractCegarLoop]: Abstraction has 3088 states and 4567 transitions. [2020-10-27 16:35:42,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:35:42,777 INFO L276 IsEmpty]: Start isEmpty. Operand 3088 states and 4567 transitions. [2020-10-27 16:35:42,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1035 [2020-10-27 16:35:42,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:35:42,819 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:35:42,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 16:35:42,820 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:35:42,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:35:42,821 INFO L82 PathProgramCache]: Analyzing trace with hash -545258173, now seen corresponding path program 1 times [2020-10-27 16:35:42,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:35:42,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752195242] [2020-10-27 16:35:42,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:35:42,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:35:43,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:35:43,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:35:48,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:35:48,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1056 [2020-10-27 16:35:48,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:35:48,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5264 [2020-10-27 16:35:48,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:35:48,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:35:48,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 16:35:48,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 16:35:48,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:35:49,137 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:35:49,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:35:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:35:49,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:35:49,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:35:49,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:35:49,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:35:49,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 16:35:49,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:35:49,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:35:49,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:35:49,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:35:49,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:35:49,362 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 16:35:49,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:35:49,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:35:49,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:35:49,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:35:49,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:35:49,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:35:49,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 16:35:49,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:35:49,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:35:49,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:35:49,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 16:35:49,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:35:49,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 16:35:49,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:35:49,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:35:49,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:35:49,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 16:35:49,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:35:49,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 16:35:49,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:35:49,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:35:49,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:35:49,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 16:35:49,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:35:50,125 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 16:35:50,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752195242] [2020-10-27 16:35:50,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:35:50,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:35:50,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267054161] [2020-10-27 16:35:50,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:35:50,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:35:50,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:35:50,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:35:50,129 INFO L87 Difference]: Start difference. First operand 3088 states and 4567 transitions. Second operand 7 states. [2020-10-27 16:35:51,245 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:35:53,006 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:36:38,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:36:38,987 INFO L93 Difference]: Finished difference Result 9821 states and 15807 transitions. [2020-10-27 16:36:38,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 16:36:38,989 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1034 [2020-10-27 16:36:38,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:36:39,032 INFO L225 Difference]: With dead ends: 9821 [2020-10-27 16:36:39,032 INFO L226 Difference]: Without dead ends: 7493 [2020-10-27 16:36:39,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 16:36:39,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7493 states. [2020-10-27 16:36:39,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7493 to 7435. [2020-10-27 16:36:39,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7435 states. [2020-10-27 16:36:39,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7435 states to 7435 states and 10376 transitions. [2020-10-27 16:36:39,285 INFO L78 Accepts]: Start accepts. Automaton has 7435 states and 10376 transitions. Word has length 1034 [2020-10-27 16:36:39,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:36:39,285 INFO L481 AbstractCegarLoop]: Abstraction has 7435 states and 10376 transitions. [2020-10-27 16:36:39,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 16:36:39,286 INFO L276 IsEmpty]: Start isEmpty. Operand 7435 states and 10376 transitions. [2020-10-27 16:36:39,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1039 [2020-10-27 16:36:39,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:36:39,319 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:36:39,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 16:36:39,320 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:36:39,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:36:39,321 INFO L82 PathProgramCache]: Analyzing trace with hash -200224757, now seen corresponding path program 1 times [2020-10-27 16:36:39,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:36:39,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066239443] [2020-10-27 16:36:39,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:36:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:36:39,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:36:39,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:36:41,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:36:44,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:36:44,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1060 [2020-10-27 16:36:44,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:36:44,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5127 [2020-10-27 16:36:44,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:36:44,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:36:44,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 16:36:44,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 16:36:44,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0