/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_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 06:58:41,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 06:58:41,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 06:58:41,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 06:58:41,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 06:58:41,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 06:58:41,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 06:58:41,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 06:58:41,540 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 06:58:41,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 06:58:41,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 06:58:41,544 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 06:58:41,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 06:58:41,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 06:58:41,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 06:58:41,548 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 06:58:41,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 06:58:41,550 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 06:58:41,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 06:58:41,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 06:58:41,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 06:58:41,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 06:58:41,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 06:58:41,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 06:58:41,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 06:58:41,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 06:58:41,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 06:58:41,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 06:58:41,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 06:58:41,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 06:58:41,568 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 06:58:41,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 06:58:41,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 06:58:41,573 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 06:58:41,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 06:58:41,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 06:58:41,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 06:58:41,582 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 06:58:41,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 06:58:41,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 06:58:41,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 06:58:41,587 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 06:58:41,637 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 06:58:41,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 06:58:41,638 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 06:58:41,639 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 06:58:41,639 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 06:58:41,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 06:58:41,639 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 06:58:41,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 06:58:41,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 06:58:41,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 06:58:41,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 06:58:41,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 06:58:41,640 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 06:58:41,641 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 06:58:41,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 06:58:41,641 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 06:58:41,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 06:58:41,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 06:58:41,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 06:58:41,642 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 06:58:41,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 06:58:41,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:58:41,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 06:58:41,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 06:58:41,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 06:58:41,643 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 06:58:41,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 06:58:41,643 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 06:58:41,644 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 06:58:41,644 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 06:58:42,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 06:58:42,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 06:58:42,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 06:58:42,060 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 06:58:42,061 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 06:58:42,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label22.c [2020-10-29 06:58:42,159 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14e2e5157/8929227f62ce4c09920f09dbdf04cee4/FLAG7f6a82f6a [2020-10-29 06:58:43,219 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 06:58:43,220 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label22.c [2020-10-29 06:58:43,256 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14e2e5157/8929227f62ce4c09920f09dbdf04cee4/FLAG7f6a82f6a [2020-10-29 06:58:43,655 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14e2e5157/8929227f62ce4c09920f09dbdf04cee4 [2020-10-29 06:58:43,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 06:58:43,666 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 06:58:43,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 06:58:43,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 06:58:43,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 06:58:43,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:58:43" (1/1) ... [2020-10-29 06:58:43,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a06b78e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:58:43, skipping insertion in model container [2020-10-29 06:58:43,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:58:43" (1/1) ... [2020-10-29 06:58:43,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 06:58:43,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 06:58:45,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:58:45,336 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 06:58:46,007 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:58:46,045 INFO L208 MainTranslator]: Completed translation [2020-10-29 06:58:46,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:58:46 WrapperNode [2020-10-29 06:58:46,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 06:58:46,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 06:58:46,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 06:58:46,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 06:58:46,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:58:46" (1/1) ... [2020-10-29 06:58:46,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:58:46" (1/1) ... [2020-10-29 06:58:46,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:58:46" (1/1) ... [2020-10-29 06:58:46,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:58:46" (1/1) ... [2020-10-29 06:58:46,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:58:46" (1/1) ... [2020-10-29 06:58:46,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:58:46" (1/1) ... [2020-10-29 06:58:46,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:58:46" (1/1) ... [2020-10-29 06:58:46,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 06:58:46,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 06:58:46,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 06:58:46,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 06:58:46,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:58:46" (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 06:58:46,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 06:58:46,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 06:58:46,523 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 06:58:46,523 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 06:58:46,523 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 06:58:46,524 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 06:58:46,524 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 06:58:46,525 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 06:58:46,525 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 06:58:46,525 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 06:58:46,526 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 06:58:46,526 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 06:58:46,527 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 06:58:46,527 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 06:58:46,527 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 06:58:46,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 06:58:46,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 06:58:46,528 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 06:58:46,529 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 06:58:46,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 06:58:46,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 06:58:46,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 06:58:46,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 06:58:46,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 06:58:46,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 06:58:51,557 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 06:58:51,560 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 06:58:51,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:58:51 BoogieIcfgContainer [2020-10-29 06:58:51,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 06:58:51,570 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 06:58:51,570 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 06:58:51,578 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 06:58:51,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 06:58:43" (1/3) ... [2020-10-29 06:58:51,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c6b3509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:58:51, skipping insertion in model container [2020-10-29 06:58:51,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:58:46" (2/3) ... [2020-10-29 06:58:51,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c6b3509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:58:51, skipping insertion in model container [2020-10-29 06:58:51,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:58:51" (3/3) ... [2020-10-29 06:58:51,583 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label22.c [2020-10-29 06:58:51,598 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 06:58:51,606 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 06:58:51,622 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 06:58:51,671 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 06:58:51,671 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 06:58:51,672 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 06:58:51,672 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 06:58:51,672 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 06:58:51,672 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 06:58:51,672 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 06:58:51,672 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 06:58:51,725 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-29 06:58:51,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-29 06:58:51,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:58:51,741 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] [2020-10-29 06:58:51,742 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:58:51,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:58:51,751 INFO L82 PathProgramCache]: Analyzing trace with hash -603732724, now seen corresponding path program 1 times [2020-10-29 06:58:51,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:58:51,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023224469] [2020-10-29 06:58:51,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:58:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:52,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:52,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:52,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 06:58:52,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:52,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 603 [2020-10-29 06:58:52,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:52,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:52,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:58:52,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:58:52,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 06:58:52,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 06:58:52,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:58:52,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:52,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:52,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:52,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:58:52,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:52,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 06:58:52,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:52,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:52,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:58:52,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:58:52,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:58:52,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:58:52,907 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 06:58:52,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023224469] [2020-10-29 06:58:52,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:58:52,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 06:58:52,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382368148] [2020-10-29 06:58:52,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:58:52,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:58:52,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:58:52,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:58:52,938 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 5 states. [2020-10-29 06:59:04,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:59:04,144 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-29 06:59:04,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:59:04,147 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-29 06:59:04,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:59:04,189 INFO L225 Difference]: With dead ends: 2476 [2020-10-29 06:59:04,190 INFO L226 Difference]: Without dead ends: 1569 [2020-10-29 06:59:04,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:59:04,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-29 06:59:04,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-29 06:59:04,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-29 06:59:04,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2522 transitions. [2020-10-29 06:59:04,422 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2522 transitions. Word has length 71 [2020-10-29 06:59:04,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:59:04,425 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2522 transitions. [2020-10-29 06:59:04,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:59:04,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2522 transitions. [2020-10-29 06:59:04,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-29 06:59:04,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:59:04,445 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, 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 06:59:04,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 06:59:04,446 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:59:04,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:59:04,448 INFO L82 PathProgramCache]: Analyzing trace with hash 860245997, now seen corresponding path program 1 times [2020-10-29 06:59:04,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:59:04,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897151051] [2020-10-29 06:59:04,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:59:04,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:04,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:04,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:04,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:05,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:05,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-29 06:59:05,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:59:05,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1096 [2020-10-29 06:59:05,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:05,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:05,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 06:59:05,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:59:05,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 06:59:05,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 06:59:05,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:59:05,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:05,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:05,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:05,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:59:05,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:05,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 06:59:05,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:05,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:05,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:59:05,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:05,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:59:05,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:59:05,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:59:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:05,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:05,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:05,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 06:59:05,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:05,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-29 06:59:05,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:05,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:05,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:59:05,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:59:05,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 06:59:05,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:59:06,074 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 06:59:06,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897151051] [2020-10-29 06:59:06,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:59:06,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:59:06,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828459363] [2020-10-29 06:59:06,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:59:06,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:59:06,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:59:06,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:59:06,080 INFO L87 Difference]: Start difference. First operand 1554 states and 2522 transitions. Second operand 6 states. [2020-10-29 06:59:17,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:59:17,808 INFO L93 Difference]: Finished difference Result 4692 states and 7653 transitions. [2020-10-29 06:59:17,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:59:17,812 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2020-10-29 06:59:17,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:59:17,834 INFO L225 Difference]: With dead ends: 4692 [2020-10-29 06:59:17,835 INFO L226 Difference]: Without dead ends: 3144 [2020-10-29 06:59:17,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:59:17,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3144 states. [2020-10-29 06:59:17,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3144 to 3126. [2020-10-29 06:59:17,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3126 states. [2020-10-29 06:59:17,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3126 states to 3126 states and 4444 transitions. [2020-10-29 06:59:17,947 INFO L78 Accepts]: Start accepts. Automaton has 3126 states and 4444 transitions. Word has length 146 [2020-10-29 06:59:17,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:59:17,948 INFO L481 AbstractCegarLoop]: Abstraction has 3126 states and 4444 transitions. [2020-10-29 06:59:17,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:59:17,948 INFO L276 IsEmpty]: Start isEmpty. Operand 3126 states and 4444 transitions. [2020-10-29 06:59:17,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-29 06:59:17,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:59:17,952 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, 1, 1, 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 06:59:17,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 06:59:17,953 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:59:17,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:59:17,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1221924363, now seen corresponding path program 1 times [2020-10-29 06:59:17,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:59:17,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059697988] [2020-10-29 06:59:17,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:59:18,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:18,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:18,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:19,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:19,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:19,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-29 06:59:19,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:59:19,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1551 [2020-10-29 06:59:19,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:19,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:19,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 06:59:19,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:59:19,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-29 06:59:19,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:19,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:59:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:19,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:19,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:19,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:59:19,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:19,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 06:59:19,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:19,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:19,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:59:19,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:19,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:59:19,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:59:19,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:59:19,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:19,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:19,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:19,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:19,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 06:59:19,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:59:19,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-29 06:59:19,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:19,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:19,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:59:19,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:59:19,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 06:59:19,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:59:20,098 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 06:59:20,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059697988] [2020-10-29 06:59:20,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:59:20,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:59:20,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713623874] [2020-10-29 06:59:20,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:59:20,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:59:20,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:59:20,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:59:20,106 INFO L87 Difference]: Start difference. First operand 3126 states and 4444 transitions. Second operand 7 states. [2020-10-29 06:59:34,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:59:34,157 INFO L93 Difference]: Finished difference Result 9552 states and 13805 transitions. [2020-10-29 06:59:34,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:59:34,161 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 150 [2020-10-29 06:59:34,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:59:34,204 INFO L225 Difference]: With dead ends: 9552 [2020-10-29 06:59:34,204 INFO L226 Difference]: Without dead ends: 6432 [2020-10-29 06:59:34,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:59:34,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6432 states. [2020-10-29 06:59:34,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6432 to 6343. [2020-10-29 06:59:34,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6343 states. [2020-10-29 06:59:34,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6343 states to 6343 states and 8155 transitions. [2020-10-29 06:59:34,472 INFO L78 Accepts]: Start accepts. Automaton has 6343 states and 8155 transitions. Word has length 150 [2020-10-29 06:59:34,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:59:34,474 INFO L481 AbstractCegarLoop]: Abstraction has 6343 states and 8155 transitions. [2020-10-29 06:59:34,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:59:34,474 INFO L276 IsEmpty]: Start isEmpty. Operand 6343 states and 8155 transitions. [2020-10-29 06:59:34,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-29 06:59:34,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:59:34,480 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:59:34,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 06:59:34,480 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:59:34,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:59:34,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1256249087, now seen corresponding path program 1 times [2020-10-29 06:59:34,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:59:34,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25369768] [2020-10-29 06:59:34,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:59:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:34,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:34,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:35,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:35,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-29 06:59:35,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:59:35,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 960 [2020-10-29 06:59:35,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:35,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:35,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:59:35,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-29 06:59:35,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 06:59:35,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:35,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:59:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:35,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:35,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:35,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:59:35,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:35,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 06:59:35,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:35,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:35,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:59:35,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:35,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:59:35,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:35,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:59:35,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:35,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:35,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:35,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 06:59:35,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:35,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-29 06:59:35,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:35,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:35,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:59:35,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:35,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 06:59:35,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:35,895 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:59:35,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25369768] [2020-10-29 06:59:35,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:59:35,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:59:35,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085013332] [2020-10-29 06:59:35,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:59:35,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:59:35,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:59:35,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:59:35,904 INFO L87 Difference]: Start difference. First operand 6343 states and 8155 transitions. Second operand 6 states. [2020-10-29 06:59:52,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:59:52,385 INFO L93 Difference]: Finished difference Result 15859 states and 21026 transitions. [2020-10-29 06:59:52,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:59:52,386 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2020-10-29 06:59:52,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:59:52,434 INFO L225 Difference]: With dead ends: 15859 [2020-10-29 06:59:52,435 INFO L226 Difference]: Without dead ends: 9522 [2020-10-29 06:59:52,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:59:52,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9522 states. [2020-10-29 06:59:52,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9522 to 9508. [2020-10-29 06:59:52,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9508 states. [2020-10-29 06:59:52,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9508 states to 9508 states and 11999 transitions. [2020-10-29 06:59:52,705 INFO L78 Accepts]: Start accepts. Automaton has 9508 states and 11999 transitions. Word has length 156 [2020-10-29 06:59:52,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:59:52,706 INFO L481 AbstractCegarLoop]: Abstraction has 9508 states and 11999 transitions. [2020-10-29 06:59:52,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:59:52,706 INFO L276 IsEmpty]: Start isEmpty. Operand 9508 states and 11999 transitions. [2020-10-29 06:59:52,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-29 06:59:52,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:59:52,712 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 06:59:52,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 06:59:52,712 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:59:52,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:59:52,713 INFO L82 PathProgramCache]: Analyzing trace with hash -693509484, now seen corresponding path program 1 times [2020-10-29 06:59:52,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:59:52,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967981297] [2020-10-29 06:59:52,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:59:52,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:52,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:52,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:54,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:56,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:56,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-29 06:59:56,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:59:56,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3671 [2020-10-29 06:59:56,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:56,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:56,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:59:56,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-29 06:59:56,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 06:59:56,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:56,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:59:56,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:56,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:56,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:56,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:59:56,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:56,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 06:59:56,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:56,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:56,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:59:56,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:56,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:59:56,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:59:56,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:59:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:56,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:56,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:56,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 06:59:56,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:56,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-29 06:59:56,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:56,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:56,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:59:56,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:56,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 06:59:56,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:56,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-29 06:59:56,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:56,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:56,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:56,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:59:56,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:56,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-29 06:59:56,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:56,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:56,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:59:56,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:59:56,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 06:59:56,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:59:57,119 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:59:57,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967981297] [2020-10-29 06:59:57,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:59:57,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:59:57,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162838631] [2020-10-29 06:59:57,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:59:57,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:59:57,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:59:57,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:59:57,123 INFO L87 Difference]: Start difference. First operand 9508 states and 11999 transitions. Second operand 7 states. [2020-10-29 07:00:14,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:00:14,269 INFO L93 Difference]: Finished difference Result 24009 states and 31607 transitions. [2020-10-29 07:00:14,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:00:14,270 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 229 [2020-10-29 07:00:14,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:00:14,337 INFO L225 Difference]: With dead ends: 24009 [2020-10-29 07:00:14,338 INFO L226 Difference]: Without dead ends: 14507 [2020-10-29 07:00:14,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:00:14,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14507 states. [2020-10-29 07:00:14,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14507 to 14393. [2020-10-29 07:00:14,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14393 states. [2020-10-29 07:00:14,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14393 states to 14393 states and 17544 transitions. [2020-10-29 07:00:14,725 INFO L78 Accepts]: Start accepts. Automaton has 14393 states and 17544 transitions. Word has length 229 [2020-10-29 07:00:14,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:00:14,726 INFO L481 AbstractCegarLoop]: Abstraction has 14393 states and 17544 transitions. [2020-10-29 07:00:14,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:00:14,726 INFO L276 IsEmpty]: Start isEmpty. Operand 14393 states and 17544 transitions. [2020-10-29 07:00:14,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-29 07:00:14,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:00:14,732 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:00:14,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:00:14,732 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:00:14,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:00:14,733 INFO L82 PathProgramCache]: Analyzing trace with hash 2095293166, now seen corresponding path program 1 times [2020-10-29 07:00:14,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:00:14,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090004599] [2020-10-29 07:00:14,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:00:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:14,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:14,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:15,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:16,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:18,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:19,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:19,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-29 07:00:19,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:00:19,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 07:00:19,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:19,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:19,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:00:19,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-29 07:00:19,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-29 07:00:19,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:00:19,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:00:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:19,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:19,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:19,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:00:19,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:19,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:00:19,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:19,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:19,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:00:19,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:00:19,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:00:19,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:00:20,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:00:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:20,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:20,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:20,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 07:00:20,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:20,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-29 07:00:20,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:20,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:20,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:00:20,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:00:20,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:00:20,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:00:20,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-29 07:00:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:20,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:20,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:20,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:20,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 07:00:20,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:00:20,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-29 07:00:20,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:20,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:20,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:00:20,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:00:20,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 07:00:20,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:00:20,711 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-29 07:00:20,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090004599] [2020-10-29 07:00:20,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:00:20,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:00:20,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142446204] [2020-10-29 07:00:20,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:00:20,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:00:20,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:00:20,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:00:20,718 INFO L87 Difference]: Start difference. First operand 14393 states and 17544 transitions. Second operand 6 states. [2020-10-29 07:00:41,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:00:41,677 INFO L93 Difference]: Finished difference Result 36109 states and 47701 transitions. [2020-10-29 07:00:41,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:00:41,680 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 242 [2020-10-29 07:00:41,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:00:41,811 INFO L225 Difference]: With dead ends: 36109 [2020-10-29 07:00:41,811 INFO L226 Difference]: Without dead ends: 28735 [2020-10-29 07:00:41,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:00:41,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28735 states. [2020-10-29 07:00:42,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28735 to 27938. [2020-10-29 07:00:42,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27938 states. [2020-10-29 07:00:42,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27938 states to 27938 states and 34656 transitions. [2020-10-29 07:00:42,560 INFO L78 Accepts]: Start accepts. Automaton has 27938 states and 34656 transitions. Word has length 242 [2020-10-29 07:00:42,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:00:42,562 INFO L481 AbstractCegarLoop]: Abstraction has 27938 states and 34656 transitions. [2020-10-29 07:00:42,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:00:42,562 INFO L276 IsEmpty]: Start isEmpty. Operand 27938 states and 34656 transitions. [2020-10-29 07:00:42,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-10-29 07:00:42,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:00:42,575 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 07:00:42,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:00:42,576 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:00:42,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:00:42,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1001160608, now seen corresponding path program 1 times [2020-10-29 07:00:42,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:00:42,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663794060] [2020-10-29 07:00:42,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:00:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:42,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:42,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:45,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:45,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-29 07:00:45,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:00:45,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3230 [2020-10-29 07:00:45,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:45,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:45,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:00:45,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:00:45,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 07:00:45,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:00:46,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:00:46,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:46,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:46,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:46,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:00:46,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:46,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:00:46,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:46,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:46,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:00:46,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:00:46,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:00:46,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:46,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:00:46,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:46,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:46,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:46,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 07:00:46,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:46,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-29 07:00:46,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:46,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:46,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:00:46,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:00:46,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 07:00:46,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:46,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-29 07:00:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:46,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:46,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:46,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:00:46,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:46,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 07:00:46,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:46,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:46,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:00:46,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 07:00:46,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:00:46,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:47,016 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 126 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:00:47,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663794060] [2020-10-29 07:00:47,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:00:47,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:00:47,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532889942] [2020-10-29 07:00:47,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:00:47,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:00:47,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:00:47,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:00:47,024 INFO L87 Difference]: Start difference. First operand 27938 states and 34656 transitions. Second operand 7 states. [2020-10-29 07:00:47,174 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-29 07:00:50,405 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-29 07:01:05,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:01:05,531 INFO L93 Difference]: Finished difference Result 53221 states and 66513 transitions. [2020-10-29 07:01:05,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:01:05,534 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 292 [2020-10-29 07:01:05,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:01:05,657 INFO L225 Difference]: With dead ends: 53221 [2020-10-29 07:01:05,657 INFO L226 Difference]: Without dead ends: 31535 [2020-10-29 07:01:05,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:01:05,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31535 states. [2020-10-29 07:01:06,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31535 to 30620. [2020-10-29 07:01:06,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30620 states. [2020-10-29 07:01:06,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30620 states to 30620 states and 38058 transitions. [2020-10-29 07:01:06,418 INFO L78 Accepts]: Start accepts. Automaton has 30620 states and 38058 transitions. Word has length 292 [2020-10-29 07:01:06,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:01:06,420 INFO L481 AbstractCegarLoop]: Abstraction has 30620 states and 38058 transitions. [2020-10-29 07:01:06,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:01:06,420 INFO L276 IsEmpty]: Start isEmpty. Operand 30620 states and 38058 transitions. [2020-10-29 07:01:06,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-29 07:01:06,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:01:06,437 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 07:01:06,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:01:06,438 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:01:06,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:01:06,439 INFO L82 PathProgramCache]: Analyzing trace with hash -589636013, now seen corresponding path program 1 times [2020-10-29 07:01:06,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:01:06,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728978965] [2020-10-29 07:01:06,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:01:06,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:06,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:06,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:06,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:07,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:10,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:11,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:11,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 372 [2020-10-29 07:01:11,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:01:11,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 07:01:11,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:11,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:11,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:01:11,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-29 07:01:11,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 07:01:11,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:11,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:01:11,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:11,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:11,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:11,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:01:11,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:11,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 07:01:11,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:11,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:11,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:01:11,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:01:11,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:01:11,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:11,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:01:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:11,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:11,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:11,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:01:11,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:11,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:01:11,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:11,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:11,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:01:11,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:01:11,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:01:11,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:11,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 07:01:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:11,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:11,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:11,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 07:01:11,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:11,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-29 07:01:11,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:11,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:11,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:01:11,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:01:11,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 07:01:11,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:11,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-29 07:01:12,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:12,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:12,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:12,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 07:01:12,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:12,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-29 07:01:12,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:12,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:12,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:01:12,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:01:12,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 07:01:12,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:01:12,528 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-29 07:01:12,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728978965] [2020-10-29 07:01:12,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:01:12,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:01:12,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690515042] [2020-10-29 07:01:12,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:01:12,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:01:12,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:01:12,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:01:12,531 INFO L87 Difference]: Start difference. First operand 30620 states and 38058 transitions. Second operand 7 states. [2020-10-29 07:01:33,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:01:33,463 INFO L93 Difference]: Finished difference Result 60920 states and 76473 transitions. [2020-10-29 07:01:33,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:01:33,465 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 356 [2020-10-29 07:01:33,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:01:33,541 INFO L225 Difference]: With dead ends: 60920 [2020-10-29 07:01:33,542 INFO L226 Difference]: Without dead ends: 31073 [2020-10-29 07:01:33,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:01:33,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31073 states. [2020-10-29 07:01:34,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31073 to 30124. [2020-10-29 07:01:34,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30124 states. [2020-10-29 07:01:34,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30124 states to 30124 states and 34887 transitions. [2020-10-29 07:01:34,196 INFO L78 Accepts]: Start accepts. Automaton has 30124 states and 34887 transitions. Word has length 356 [2020-10-29 07:01:34,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:01:34,197 INFO L481 AbstractCegarLoop]: Abstraction has 30124 states and 34887 transitions. [2020-10-29 07:01:34,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:01:34,197 INFO L276 IsEmpty]: Start isEmpty. Operand 30124 states and 34887 transitions. [2020-10-29 07:01:34,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2020-10-29 07:01:34,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:01:34,213 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:01:34,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:01:34,213 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:01:34,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:01:34,214 INFO L82 PathProgramCache]: Analyzing trace with hash 615418049, now seen corresponding path program 1 times [2020-10-29 07:01:34,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:01:34,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217798411] [2020-10-29 07:01:34,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:01:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:34,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:34,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:36,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:39,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:39,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 398 [2020-10-29 07:01:39,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:01:39,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-29 07:01:39,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:39,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:39,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:01:39,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-10-29 07:01:39,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:01:39,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:39,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:01:39,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:39,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:39,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:39,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:01:39,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:39,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:01:39,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:39,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:39,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:01:39,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:01:39,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:01:39,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:39,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:01:39,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:39,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:39,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:39,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 07:01:39,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:39,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 07:01:39,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:39,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:39,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:01:39,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:01:39,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:01:39,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:39,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-29 07:01:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:39,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:39,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:39,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 07:01:39,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:39,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 07:01:39,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:39,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:39,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:01:39,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:01:39,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:01:39,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:39,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-29 07:01:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:39,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:39,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:39,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:01:39,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:39,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-29 07:01:39,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:39,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:39,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:01:39,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:01:39,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 07:01:39,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:40,141 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 334 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-29 07:01:40,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217798411] [2020-10-29 07:01:40,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:01:40,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:01:40,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848594513] [2020-10-29 07:01:40,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:01:40,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:01:40,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:01:40,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:01:40,144 INFO L87 Difference]: Start difference. First operand 30124 states and 34887 transitions. Second operand 7 states. [2020-10-29 07:01:57,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:01:57,511 INFO L93 Difference]: Finished difference Result 68344 states and 82013 transitions. [2020-10-29 07:01:57,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:01:57,513 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 382 [2020-10-29 07:01:57,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:01:57,678 INFO L225 Difference]: With dead ends: 68344 [2020-10-29 07:01:57,678 INFO L226 Difference]: Without dead ends: 38993 [2020-10-29 07:01:57,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:01:57,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38993 states. [2020-10-29 07:01:58,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38993 to 38061. [2020-10-29 07:01:58,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38061 states. [2020-10-29 07:01:58,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38061 states to 38061 states and 43816 transitions. [2020-10-29 07:01:58,394 INFO L78 Accepts]: Start accepts. Automaton has 38061 states and 43816 transitions. Word has length 382 [2020-10-29 07:01:58,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:01:58,395 INFO L481 AbstractCegarLoop]: Abstraction has 38061 states and 43816 transitions. [2020-10-29 07:01:58,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:01:58,395 INFO L276 IsEmpty]: Start isEmpty. Operand 38061 states and 43816 transitions. [2020-10-29 07:01:58,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2020-10-29 07:01:58,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:01:58,409 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:01:58,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:01:58,409 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:01:58,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:01:58,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1023005239, now seen corresponding path program 1 times [2020-10-29 07:01:58,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:01:58,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195336915] [2020-10-29 07:01:58,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:01:58,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:58,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:58,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:59,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:00,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:00,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:03,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:03,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 422 [2020-10-29 07:02:03,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:02:03,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 07:02:03,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:03,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:03,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 07:02:03,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:02:03,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 345 [2020-10-29 07:02:03,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:03,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:02:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:03,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:03,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:03,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:02:03,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:03,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 07:02:03,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:03,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:03,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:02:03,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:02:03,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:02:03,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:03,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:02:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:03,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:03,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:03,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 07:02:03,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:03,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-29 07:02:03,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:03,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:03,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:02:03,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:02:03,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-29 07:02:03,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:03,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-29 07:02:03,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:04,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:04,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:04,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 07:02:04,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:04,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 07:02:04,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:04,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:04,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:02:04,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:02:04,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 07:02:04,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:04,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-10-29 07:02:04,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:04,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:04,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:04,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 07:02:04,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:04,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-29 07:02:04,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:04,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:04,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:02:04,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:02:04,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 07:02:04,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:04,515 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 191 proven. 178 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-29 07:02:04,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195336915] [2020-10-29 07:02:04,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:02:04,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:02:04,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459108314] [2020-10-29 07:02:04,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:02:04,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:02:04,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:02:04,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:02:04,521 INFO L87 Difference]: Start difference. First operand 38061 states and 43816 transitions. Second operand 8 states.