/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/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:58:01,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:58:01,421 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:58:01,474 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:58:01,475 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:58:01,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:58:01,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:58:01,487 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:58:01,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:58:01,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:58:01,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:58:01,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:58:01,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:58:01,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:58:01,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:58:01,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:58:01,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:58:01,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:58:01,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:58:01,523 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:58:01,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:58:01,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:58:01,528 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:58:01,531 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:58:01,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:58:01,541 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:58:01,541 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:58:01,542 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:58:01,543 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:58:01,546 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:58:01,546 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:58:01,547 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:58:01,548 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:58:01,549 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:58:01,550 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:58:01,550 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:58:01,551 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:58:01,551 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:58:01,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:58:01,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:58:01,553 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:58:01,561 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 13:58:01,618 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:58:01,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:58:01,623 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:58:01,623 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:58:01,623 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:58:01,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:58:01,624 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:58:01,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:58:01,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:58:01,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:58:01,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:58:01,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:58:01,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:58:01,626 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:58:01,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:58:01,627 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:58:01,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:58:01,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:58:01,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:58:01,628 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:58:01,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:58:01,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:58:01,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:58:01,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:58:01,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:58:01,629 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:58:01,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:58:01,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:58:01,629 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:58:01,630 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:58:01,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:58:02,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:58:02,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:58:02,036 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:58:02,036 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:58:02,037 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-10-29 13:58:02,124 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f107f5bd7/5160138f1e524e19aab0b3aaca6b5d51/FLAG0ee2624c3 [2020-10-29 13:58:02,802 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:58:02,803 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-10-29 13:58:02,817 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f107f5bd7/5160138f1e524e19aab0b3aaca6b5d51/FLAG0ee2624c3 [2020-10-29 13:58:03,124 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f107f5bd7/5160138f1e524e19aab0b3aaca6b5d51 [2020-10-29 13:58:03,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:58:03,138 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:58:03,142 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:58:03,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:58:03,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:58:03,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:58:03" (1/1) ... [2020-10-29 13:58:03,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ff11ad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:03, skipping insertion in model container [2020-10-29 13:58:03,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:58:03" (1/1) ... [2020-10-29 13:58:03,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:58:03,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:58:03,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:58:03,551 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:58:03,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:58:03,707 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:58:03,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:03 WrapperNode [2020-10-29 13:58:03,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:58:03,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:58:03,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:58:03,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:58:03,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:03" (1/1) ... [2020-10-29 13:58:03,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:03" (1/1) ... [2020-10-29 13:58:03,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:03" (1/1) ... [2020-10-29 13:58:03,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:03" (1/1) ... [2020-10-29 13:58:03,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:03" (1/1) ... [2020-10-29 13:58:03,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:03" (1/1) ... [2020-10-29 13:58:03,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:03" (1/1) ... [2020-10-29 13:58:03,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:58:03,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:58:03,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:58:03,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:58:03,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:03" (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 13:58:03,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:58:03,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:58:03,927 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:58:03,927 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:58:03,927 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:58:03,927 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:58:03,927 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:58:03,927 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:58:03,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:58:03,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:58:03,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:58:03,928 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:58:03,928 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:58:03,928 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:58:03,929 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:58:03,929 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:58:03,929 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:58:03,929 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:58:03,929 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:58:03,929 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:58:03,930 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:58:03,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:58:03,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:58:03,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:58:03,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:58:03,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:58:03,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:58:04,959 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:58:04,960 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:58:04,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:58:04 BoogieIcfgContainer [2020-10-29 13:58:04,962 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:58:04,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:58:04,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:58:04,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:58:04,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:58:03" (1/3) ... [2020-10-29 13:58:04,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ee26ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:58:04, skipping insertion in model container [2020-10-29 13:58:04,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:03" (2/3) ... [2020-10-29 13:58:04,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ee26ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:58:04, skipping insertion in model container [2020-10-29 13:58:04,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:58:04" (3/3) ... [2020-10-29 13:58:04,971 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-10-29 13:58:04,982 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:58:04,988 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:58:05,000 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:58:05,028 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:58:05,028 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:58:05,028 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:58:05,028 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:58:05,029 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:58:05,029 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:58:05,029 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:58:05,029 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:58:05,050 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2020-10-29 13:58:05,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 13:58:05,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:58:05,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:58:05,062 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:58:05,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:58:05,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1233459878, now seen corresponding path program 1 times [2020-10-29 13:58:05,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:58:05,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051328658] [2020-10-29 13:58:05,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:58:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:05,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:05,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:05,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:06,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:08,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:08,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 13:58:08,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 13:58:08,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2951 [2020-10-29 13:58:08,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:08,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:08,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:58:08,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 13:58:08,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 13:58:08,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 13:58:08,779 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:58:08,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:58:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:08,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:08,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:08,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:58:08,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:58:08,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 13:58:08,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:08,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:08,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:58:08,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:58:08,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:58:08,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:08,834 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 13:58:08,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051328658] [2020-10-29 13:58:08,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:58:08,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:58:08,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191529392] [2020-10-29 13:58:08,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:58:08,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:58:08,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:58:08,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:58:08,859 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 4 states. [2020-10-29 13:58:09,198 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-29 13:58:10,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:58:10,153 INFO L93 Difference]: Finished difference Result 338 states and 566 transitions. [2020-10-29 13:58:10,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:58:10,154 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-29 13:58:10,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:58:10,168 INFO L225 Difference]: With dead ends: 338 [2020-10-29 13:58:10,168 INFO L226 Difference]: Without dead ends: 233 [2020-10-29 13:58:10,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:58:10,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-29 13:58:10,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 230. [2020-10-29 13:58:10,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-29 13:58:10,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 362 transitions. [2020-10-29 13:58:10,244 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 362 transitions. Word has length 67 [2020-10-29 13:58:10,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:58:10,245 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 362 transitions. [2020-10-29 13:58:10,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:58:10,245 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 362 transitions. [2020-10-29 13:58:10,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 13:58:10,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:58:10,249 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] [2020-10-29 13:58:10,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:58:10,249 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:58:10,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:58:10,250 INFO L82 PathProgramCache]: Analyzing trace with hash 309649509, now seen corresponding path program 1 times [2020-10-29 13:58:10,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:58:10,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314315483] [2020-10-29 13:58:10,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:58:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:10,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:10,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:10,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:10,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:12,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:15,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:15,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 13:58:15,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:58:15,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 13:58:15,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:15,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:15,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:58:15,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:58:15,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 13:58:15,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:58:15,729 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:58:15,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:58:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:15,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:15,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:15,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:58:15,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:58:15,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:58:15,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:15,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:15,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:58:15,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:58:15,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:58:15,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:58:15,780 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 13:58:15,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314315483] [2020-10-29 13:58:15,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:58:15,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:58:15,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072963080] [2020-10-29 13:58:15,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:58:15,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:58:15,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:58:15,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:58:15,784 INFO L87 Difference]: Start difference. First operand 230 states and 362 transitions. Second operand 5 states. [2020-10-29 13:58:17,171 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:58:17,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:58:17,287 INFO L93 Difference]: Finished difference Result 607 states and 973 transitions. [2020-10-29 13:58:17,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:58:17,288 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-29 13:58:17,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:58:17,295 INFO L225 Difference]: With dead ends: 607 [2020-10-29 13:58:17,295 INFO L226 Difference]: Without dead ends: 438 [2020-10-29 13:58:17,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:58:17,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-10-29 13:58:17,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 435. [2020-10-29 13:58:17,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-10-29 13:58:17,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 684 transitions. [2020-10-29 13:58:17,378 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 684 transitions. Word has length 69 [2020-10-29 13:58:17,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:58:17,380 INFO L481 AbstractCegarLoop]: Abstraction has 435 states and 684 transitions. [2020-10-29 13:58:17,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:58:17,380 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 684 transitions. [2020-10-29 13:58:17,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 13:58:17,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:58:17,389 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] [2020-10-29 13:58:17,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:58:17,389 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:58:17,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:58:17,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1227978955, now seen corresponding path program 1 times [2020-10-29 13:58:17,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:58:17,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043071936] [2020-10-29 13:58:17,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:58:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:17,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:17,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:17,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:17,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:18,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:21,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:21,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 13:58:21,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:58:21,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4538 [2020-10-29 13:58:21,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:21,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:21,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:58:21,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:58:21,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 13:58:21,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 13:58:22,370 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:58:22,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:58:22,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:22,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:22,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:22,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:58:22,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:58:22,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 13:58:22,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:22,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:22,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:58:22,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:58:22,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:58:22,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:58:22,425 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 13:58:22,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043071936] [2020-10-29 13:58:22,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:58:22,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:58:22,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733796190] [2020-10-29 13:58:22,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:58:22,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:58:22,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:58:22,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:58:22,428 INFO L87 Difference]: Start difference. First operand 435 states and 684 transitions. Second operand 5 states. [2020-10-29 13:58:23,620 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:58:23,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:58:23,721 INFO L93 Difference]: Finished difference Result 1142 states and 1824 transitions. [2020-10-29 13:58:23,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:58:23,721 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-10-29 13:58:23,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:58:23,728 INFO L225 Difference]: With dead ends: 1142 [2020-10-29 13:58:23,728 INFO L226 Difference]: Without dead ends: 819 [2020-10-29 13:58:23,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:58:23,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2020-10-29 13:58:23,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 816. [2020-10-29 13:58:23,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-10-29 13:58:23,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1274 transitions. [2020-10-29 13:58:23,855 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1274 transitions. Word has length 70 [2020-10-29 13:58:23,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:58:23,856 INFO L481 AbstractCegarLoop]: Abstraction has 816 states and 1274 transitions. [2020-10-29 13:58:23,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:58:23,856 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1274 transitions. [2020-10-29 13:58:23,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 13:58:23,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:58:23,863 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] [2020-10-29 13:58:23,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:58:23,863 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:58:23,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:58:23,868 INFO L82 PathProgramCache]: Analyzing trace with hash -2019754633, now seen corresponding path program 1 times [2020-10-29 13:58:23,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:58:23,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012256975] [2020-10-29 13:58:23,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:58:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:23,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:23,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:24,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:24,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:24,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:25,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:28,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:28,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 13:58:28,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:58:28,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 13:58:28,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:28,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:28,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:58:28,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:58:28,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 13:58:28,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:29,354 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:58:29,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:58:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:29,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:29,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:29,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:58:29,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:58:29,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:58:29,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:29,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:29,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:58:29,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:58:29,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:58:29,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:29,428 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 13:58:29,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012256975] [2020-10-29 13:58:29,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:58:29,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:58:29,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304770852] [2020-10-29 13:58:29,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:58:29,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:58:29,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:58:29,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:58:29,433 INFO L87 Difference]: Start difference. First operand 816 states and 1274 transitions. Second operand 5 states. [2020-10-29 13:58:30,648 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:58:30,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:58:30,793 INFO L93 Difference]: Finished difference Result 2332 states and 3632 transitions. [2020-10-29 13:58:30,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:58:30,794 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-10-29 13:58:30,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:58:30,803 INFO L225 Difference]: With dead ends: 2332 [2020-10-29 13:58:30,803 INFO L226 Difference]: Without dead ends: 1557 [2020-10-29 13:58:30,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:58:30,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1557 states. [2020-10-29 13:58:30,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1557 to 1554. [2020-10-29 13:58:30,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-29 13:58:30,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2408 transitions. [2020-10-29 13:58:30,971 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2408 transitions. Word has length 70 [2020-10-29 13:58:30,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:58:30,972 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2408 transitions. [2020-10-29 13:58:30,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:58:30,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2408 transitions. [2020-10-29 13:58:30,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-29 13:58:30,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:58:30,975 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 13:58:30,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:58:30,976 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:58:30,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:58:30,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1131152968, now seen corresponding path program 1 times [2020-10-29 13:58:30,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:58:30,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843677687] [2020-10-29 13:58:30,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:58:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:31,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:31,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:31,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:31,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:31,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:32,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:32,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 13:58:32,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:58:32,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1666 [2020-10-29 13:58:32,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:32,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:32,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:58:32,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 13:58:32,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 13:58:32,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:33,046 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:58:33,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:58:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:33,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:33,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:33,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:58:33,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:58:33,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:58:33,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:33,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:33,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:58:33,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:58:33,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:58:33,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:33,083 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 13:58:33,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843677687] [2020-10-29 13:58:33,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:58:33,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:58:33,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220951775] [2020-10-29 13:58:33,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:58:33,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:58:33,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:58:33,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:58:33,087 INFO L87 Difference]: Start difference. First operand 1554 states and 2408 transitions. Second operand 4 states. [2020-10-29 13:58:33,405 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-29 13:58:34,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:58:34,230 INFO L93 Difference]: Finished difference Result 3816 states and 6156 transitions. [2020-10-29 13:58:34,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:58:34,231 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-10-29 13:58:34,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:58:34,246 INFO L225 Difference]: With dead ends: 3816 [2020-10-29 13:58:34,246 INFO L226 Difference]: Without dead ends: 2625 [2020-10-29 13:58:34,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:58:34,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2625 states. [2020-10-29 13:58:34,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2625 to 2622. [2020-10-29 13:58:34,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2622 states. [2020-10-29 13:58:34,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2622 states to 2622 states and 4164 transitions. [2020-10-29 13:58:34,543 INFO L78 Accepts]: Start accepts. Automaton has 2622 states and 4164 transitions. Word has length 71 [2020-10-29 13:58:34,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:58:34,546 INFO L481 AbstractCegarLoop]: Abstraction has 2622 states and 4164 transitions. [2020-10-29 13:58:34,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:58:34,546 INFO L276 IsEmpty]: Start isEmpty. Operand 2622 states and 4164 transitions. [2020-10-29 13:58:34,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-29 13:58:34,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:58:34,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:58:34,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:58:34,551 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:58:34,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:58:34,551 INFO L82 PathProgramCache]: Analyzing trace with hash 760888311, now seen corresponding path program 1 times [2020-10-29 13:58:34,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:58:34,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975185949] [2020-10-29 13:58:34,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:58:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:34,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:34,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:34,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:34,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:35,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:36,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:38,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:38,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 13:58:38,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:58:38,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4287 [2020-10-29 13:58:38,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:38,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:38,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:58:38,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:58:38,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 13:58:38,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:39,387 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:58:39,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:58:39,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:39,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:39,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:39,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:58:39,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:58:39,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 13:58:39,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:39,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:39,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:58:39,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:58:39,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:58:39,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:58:39,457 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 13:58:39,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975185949] [2020-10-29 13:58:39,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:58:39,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:58:39,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278644636] [2020-10-29 13:58:39,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:58:39,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:58:39,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:58:39,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:58:39,462 INFO L87 Difference]: Start difference. First operand 2622 states and 4164 transitions. Second operand 5 states. [2020-10-29 13:58:41,006 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:58:41,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:58:41,422 INFO L93 Difference]: Finished difference Result 7405 states and 11813 transitions. [2020-10-29 13:58:41,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:58:41,422 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-29 13:58:41,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:58:41,450 INFO L225 Difference]: With dead ends: 7405 [2020-10-29 13:58:41,450 INFO L226 Difference]: Without dead ends: 5004 [2020-10-29 13:58:41,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:58:41,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5004 states. [2020-10-29 13:58:41,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5004 to 5001. [2020-10-29 13:58:41,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5001 states. [2020-10-29 13:58:42,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5001 states to 5001 states and 7861 transitions. [2020-10-29 13:58:42,002 INFO L78 Accepts]: Start accepts. Automaton has 5001 states and 7861 transitions. Word has length 73 [2020-10-29 13:58:42,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:58:42,003 INFO L481 AbstractCegarLoop]: Abstraction has 5001 states and 7861 transitions. [2020-10-29 13:58:42,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:58:42,003 INFO L276 IsEmpty]: Start isEmpty. Operand 5001 states and 7861 transitions. [2020-10-29 13:58:42,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-29 13:58:42,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:58:42,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:58:42,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:58:42,010 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:58:42,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:58:42,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1572790344, now seen corresponding path program 1 times [2020-10-29 13:58:42,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:58:42,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969529241] [2020-10-29 13:58:42,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:58:42,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:42,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:42,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:42,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:42,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:42,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:42,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:43,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:45,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:45,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 13:58:45,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:58:45,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3414 [2020-10-29 13:58:45,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:45,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:45,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:58:45,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:58:45,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 13:58:45,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:45,985 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:58:45,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:58:45,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:45,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:46,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:46,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:58:46,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:58:46,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 13:58:46,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:46,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:46,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:58:46,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:58:46,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:58:46,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:58:46,058 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 13:58:46,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969529241] [2020-10-29 13:58:46,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:58:46,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:58:46,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886316836] [2020-10-29 13:58:46,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:58:46,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:58:46,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:58:46,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:58:46,063 INFO L87 Difference]: Start difference. First operand 5001 states and 7861 transitions. Second operand 5 states. [2020-10-29 13:58:47,728 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:58:48,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:58:48,250 INFO L93 Difference]: Finished difference Result 13909 states and 22116 transitions. [2020-10-29 13:58:48,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:58:48,251 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-10-29 13:58:48,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:58:48,297 INFO L225 Difference]: With dead ends: 13909 [2020-10-29 13:58:48,297 INFO L226 Difference]: Without dead ends: 9586 [2020-10-29 13:58:48,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:58:48,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9586 states. [2020-10-29 13:58:49,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9586 to 9583. [2020-10-29 13:58:49,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9583 states. [2020-10-29 13:58:49,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9583 states to 9583 states and 14944 transitions. [2020-10-29 13:58:49,441 INFO L78 Accepts]: Start accepts. Automaton has 9583 states and 14944 transitions. Word has length 74 [2020-10-29 13:58:49,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:58:49,441 INFO L481 AbstractCegarLoop]: Abstraction has 9583 states and 14944 transitions. [2020-10-29 13:58:49,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:58:49,441 INFO L276 IsEmpty]: Start isEmpty. Operand 9583 states and 14944 transitions. [2020-10-29 13:58:49,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-29 13:58:49,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:58:49,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:58:49,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:58:49,453 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:58:49,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:58:49,454 INFO L82 PathProgramCache]: Analyzing trace with hash -433399397, now seen corresponding path program 1 times [2020-10-29 13:58:49,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:58:49,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935370271] [2020-10-29 13:58:49,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:58:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:49,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:49,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:49,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:49,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:49,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:50,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:50,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:52,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:54,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:54,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 13:58:54,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:58:54,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 13:58:54,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:54,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:54,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:58:54,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:58:54,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 13:58:54,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:54,864 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:58:54,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:58:54,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:54,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:54,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:54,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:58:54,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:58:54,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 13:58:54,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:54,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:54,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:58:54,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:58:54,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:58:54,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:54,915 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 13:58:54,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935370271] [2020-10-29 13:58:54,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:58:54,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:58:54,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453645533] [2020-10-29 13:58:54,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:58:54,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:58:54,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:58:54,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:58:54,923 INFO L87 Difference]: Start difference. First operand 9583 states and 14944 transitions. Second operand 5 states. [2020-10-29 13:58:56,897 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:58:58,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:58:58,007 INFO L93 Difference]: Finished difference Result 27229 states and 42664 transitions. [2020-10-29 13:58:58,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:58:58,008 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-10-29 13:58:58,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:58:58,081 INFO L225 Difference]: With dead ends: 27229 [2020-10-29 13:58:58,081 INFO L226 Difference]: Without dead ends: 18426 [2020-10-29 13:58:58,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:58:58,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18426 states. [2020-10-29 13:58:59,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18426 to 18423. [2020-10-29 13:58:59,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18423 states. [2020-10-29 13:58:59,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18423 states to 18423 states and 28468 transitions. [2020-10-29 13:58:59,934 INFO L78 Accepts]: Start accepts. Automaton has 18423 states and 28468 transitions. Word has length 74 [2020-10-29 13:58:59,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:58:59,934 INFO L481 AbstractCegarLoop]: Abstraction has 18423 states and 28468 transitions. [2020-10-29 13:58:59,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:58:59,934 INFO L276 IsEmpty]: Start isEmpty. Operand 18423 states and 28468 transitions. [2020-10-29 13:58:59,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 13:58:59,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:58:59,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:58:59,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:58:59,956 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:58:59,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:58:59,957 INFO L82 PathProgramCache]: Analyzing trace with hash -250235864, now seen corresponding path program 1 times [2020-10-29 13:58:59,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:58:59,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626751164] [2020-10-29 13:58:59,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:58:59,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:59,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:00,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:00,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:00,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:00,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:00,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:00,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:00,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:03,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:04,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:04,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 13:59:04,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:59:04,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 13:59:04,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:04,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:04,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:59:04,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:59:04,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 13:59:04,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:05,386 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:59:05,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:05,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:05,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:05,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:05,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:05,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:05,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:59:05,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:05,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:05,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:05,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:05,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:05,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:05,434 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 13:59:05,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626751164] [2020-10-29 13:59:05,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:05,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:59:05,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192837574] [2020-10-29 13:59:05,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:59:05,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:05,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:59:05,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:05,436 INFO L87 Difference]: Start difference. First operand 18423 states and 28468 transitions. Second operand 5 states. [2020-10-29 13:59:05,794 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-29 13:59:08,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:08,947 INFO L93 Difference]: Finished difference Result 32653 states and 50463 transitions. [2020-10-29 13:59:08,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:59:08,948 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-10-29 13:59:08,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:09,003 INFO L225 Difference]: With dead ends: 32653 [2020-10-29 13:59:09,003 INFO L226 Difference]: Without dead ends: 23898 [2020-10-29 13:59:09,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:59:09,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23898 states. [2020-10-29 13:59:11,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23898 to 23895. [2020-10-29 13:59:11,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23895 states. [2020-10-29 13:59:11,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23895 states to 23895 states and 36139 transitions. [2020-10-29 13:59:11,337 INFO L78 Accepts]: Start accepts. Automaton has 23895 states and 36139 transitions. Word has length 75 [2020-10-29 13:59:11,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:11,338 INFO L481 AbstractCegarLoop]: Abstraction has 23895 states and 36139 transitions. [2020-10-29 13:59:11,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:59:11,338 INFO L276 IsEmpty]: Start isEmpty. Operand 23895 states and 36139 transitions. [2020-10-29 13:59:11,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 13:59:11,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:11,365 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:59:11,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:59:11,365 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:11,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:11,366 INFO L82 PathProgramCache]: Analyzing trace with hash 677298846, now seen corresponding path program 1 times [2020-10-29 13:59:11,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:11,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249209399] [2020-10-29 13:59:11,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:11,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:11,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:11,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:11,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:11,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:11,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:16,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:16,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:16,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 13:59:16,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:59:16,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 13:59:16,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:16,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:16,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:59:16,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 13:59:16,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 13:59:16,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:16,762 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:59:16,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:16,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:16,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:16,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:16,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:16,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:59:16,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:16,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:16,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:16,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:16,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:16,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:16,812 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 13:59:16,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249209399] [2020-10-29 13:59:16,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:16,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:59:16,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715238100] [2020-10-29 13:59:16,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:59:16,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:16,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:59:16,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:59:16,816 INFO L87 Difference]: Start difference. First operand 23895 states and 36139 transitions. Second operand 4 states. [2020-10-29 13:59:17,167 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-29 13:59:21,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:21,122 INFO L93 Difference]: Finished difference Result 57245 states and 89135 transitions. [2020-10-29 13:59:21,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:59:21,122 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-10-29 13:59:21,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:21,202 INFO L225 Difference]: With dead ends: 57245 [2020-10-29 13:59:21,203 INFO L226 Difference]: Without dead ends: 37338 [2020-10-29 13:59:21,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:21,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37338 states. [2020-10-29 13:59:25,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37338 to 37335. [2020-10-29 13:59:25,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37335 states. [2020-10-29 13:59:25,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37335 states to 37335 states and 55883 transitions. [2020-10-29 13:59:25,324 INFO L78 Accepts]: Start accepts. Automaton has 37335 states and 55883 transitions. Word has length 75 [2020-10-29 13:59:25,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:25,325 INFO L481 AbstractCegarLoop]: Abstraction has 37335 states and 55883 transitions. [2020-10-29 13:59:25,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:59:25,325 INFO L276 IsEmpty]: Start isEmpty. Operand 37335 states and 55883 transitions. [2020-10-29 13:59:25,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-29 13:59:25,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:25,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:59:25,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:59:25,362 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:25,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:25,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1811444415, now seen corresponding path program 1 times [2020-10-29 13:59:25,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:25,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671539144] [2020-10-29 13:59:25,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:25,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:25,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:25,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:25,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:25,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:25,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:25,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:26,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:30,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:30,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 13:59:30,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:59:30,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 13:59:30,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:30,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:30,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:59:30,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:59:30,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 13:59:30,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:30,783 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:59:30,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:30,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:30,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:30,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:30,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:30,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:30,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 13:59:30,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:30,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:30,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:30,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:30,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:30,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:30,820 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 13:59:30,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671539144] [2020-10-29 13:59:30,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:30,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:59:30,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870535162] [2020-10-29 13:59:30,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:59:30,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:30,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:59:30,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:30,822 INFO L87 Difference]: Start difference. First operand 37335 states and 55883 transitions. Second operand 5 states. [2020-10-29 13:59:31,257 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-29 13:59:36,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:36,136 INFO L93 Difference]: Finished difference Result 61630 states and 91987 transitions. [2020-10-29 13:59:36,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:59:36,137 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-29 13:59:36,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:36,209 INFO L225 Difference]: With dead ends: 61630 [2020-10-29 13:59:36,209 INFO L226 Difference]: Without dead ends: 41911 [2020-10-29 13:59:36,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:59:36,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41911 states. [2020-10-29 13:59:40,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41911 to 41908. [2020-10-29 13:59:40,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41908 states. [2020-10-29 13:59:41,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41908 states to 41908 states and 61876 transitions. [2020-10-29 13:59:41,067 INFO L78 Accepts]: Start accepts. Automaton has 41908 states and 61876 transitions. Word has length 78 [2020-10-29 13:59:41,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:41,067 INFO L481 AbstractCegarLoop]: Abstraction has 41908 states and 61876 transitions. [2020-10-29 13:59:41,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:59:41,068 INFO L276 IsEmpty]: Start isEmpty. Operand 41908 states and 61876 transitions. [2020-10-29 13:59:41,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-29 13:59:41,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:41,094 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:59:41,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 13:59:41,094 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:41,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:41,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1303410491, now seen corresponding path program 1 times [2020-10-29 13:59:41,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:41,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051385087] [2020-10-29 13:59:41,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:41,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:41,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:41,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:41,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:41,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:45,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:46,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:46,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 13:59:46,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:59:46,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 13:59:46,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:46,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:46,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:59:46,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 13:59:46,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 13:59:46,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:46,496 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:59:46,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:46,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:46,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:46,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:46,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:46,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:46,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:59:46,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:46,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:46,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:46,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:46,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:46,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:46,532 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 13:59:46,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051385087] [2020-10-29 13:59:46,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:46,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:59:46,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327988001] [2020-10-29 13:59:46,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:59:46,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:46,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:59:46,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:46,534 INFO L87 Difference]: Start difference. First operand 41908 states and 61876 transitions. Second operand 5 states. [2020-10-29 13:59:50,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:50,143 INFO L93 Difference]: Finished difference Result 67965 states and 100470 transitions. [2020-10-29 13:59:50,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:59:50,143 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-29 13:59:50,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:50,176 INFO L225 Difference]: With dead ends: 67965 [2020-10-29 13:59:50,176 INFO L226 Difference]: Without dead ends: 26726 [2020-10-29 13:59:50,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:59:50,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26726 states. [2020-10-29 13:59:53,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26726 to 26726. [2020-10-29 13:59:53,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26726 states. [2020-10-29 13:59:53,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26726 states to 26726 states and 39412 transitions. [2020-10-29 13:59:53,219 INFO L78 Accepts]: Start accepts. Automaton has 26726 states and 39412 transitions. Word has length 78 [2020-10-29 13:59:53,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:53,220 INFO L481 AbstractCegarLoop]: Abstraction has 26726 states and 39412 transitions. [2020-10-29 13:59:53,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:59:53,220 INFO L276 IsEmpty]: Start isEmpty. Operand 26726 states and 39412 transitions. [2020-10-29 13:59:53,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-29 13:59:53,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:53,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:59:53,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 13:59:53,234 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:53,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:53,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1127866419, now seen corresponding path program 1 times [2020-10-29 13:59:53,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:53,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584645498] [2020-10-29 13:59:53,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:53,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:53,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:53,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:53,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:53,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:54,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:54,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:54,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:58,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:58,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 13:59:58,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:59:58,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 13:59:58,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:58,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:58,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:59:58,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:59:58,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 13:59:58,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:58,662 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:59:58,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:58,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:58,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:58,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:58,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:58,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 13:59:58,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:58,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:58,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:58,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:58,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:58,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:58,697 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 13:59:58,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584645498] [2020-10-29 13:59:58,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:58,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:59:58,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934937021] [2020-10-29 13:59:58,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:59:58,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:58,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:59:58,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:58,699 INFO L87 Difference]: Start difference. First operand 26726 states and 39412 transitions. Second operand 5 states. [2020-10-29 13:59:59,121 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-29 14:00:03,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:03,355 INFO L93 Difference]: Finished difference Result 46759 states and 69033 transitions. [2020-10-29 14:00:03,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:00:03,356 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-29 14:00:03,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:03,401 INFO L225 Difference]: With dead ends: 46759 [2020-10-29 14:00:03,401 INFO L226 Difference]: Without dead ends: 30686 [2020-10-29 14:00:03,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:00:03,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30686 states. [2020-10-29 14:00:06,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30686 to 30683. [2020-10-29 14:00:06,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30683 states. [2020-10-29 14:00:06,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30683 states to 30683 states and 44543 transitions. [2020-10-29 14:00:06,764 INFO L78 Accepts]: Start accepts. Automaton has 30683 states and 44543 transitions. Word has length 78 [2020-10-29 14:00:06,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:06,765 INFO L481 AbstractCegarLoop]: Abstraction has 30683 states and 44543 transitions. [2020-10-29 14:00:06,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:00:06,765 INFO L276 IsEmpty]: Start isEmpty. Operand 30683 states and 44543 transitions. [2020-10-29 14:00:06,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-29 14:00:06,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:06,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:00:06,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 14:00:06,780 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:06,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:06,781 INFO L82 PathProgramCache]: Analyzing trace with hash 545851375, now seen corresponding path program 1 times [2020-10-29 14:00:06,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:06,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195571232] [2020-10-29 14:00:06,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:06,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:06,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:06,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:06,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:06,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:07,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:11,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:11,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 14:00:11,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:00:11,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 14:00:11,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:11,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:11,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:00:11,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 14:00:11,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 14:00:11,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:12,156 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 14:00:12,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:12,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:12,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:12,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:12,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:12,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:12,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 14:00:12,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:12,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:12,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:12,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:12,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:12,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:12,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:12,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195571232] [2020-10-29 14:00:12,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:12,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:00:12,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877179015] [2020-10-29 14:00:12,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:00:12,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:12,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:00:12,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:00:12,186 INFO L87 Difference]: Start difference. First operand 30683 states and 44543 transitions. Second operand 5 states. [2020-10-29 14:00:15,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:15,220 INFO L93 Difference]: Finished difference Result 50793 states and 73751 transitions. [2020-10-29 14:00:15,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:00:15,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-29 14:00:15,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:15,246 INFO L225 Difference]: With dead ends: 50793 [2020-10-29 14:00:15,246 INFO L226 Difference]: Without dead ends: 20613 [2020-10-29 14:00:15,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:00:15,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20613 states. [2020-10-29 14:00:17,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20613 to 20611. [2020-10-29 14:00:17,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20611 states. [2020-10-29 14:00:17,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20611 states to 20611 states and 29794 transitions. [2020-10-29 14:00:17,510 INFO L78 Accepts]: Start accepts. Automaton has 20611 states and 29794 transitions. Word has length 78 [2020-10-29 14:00:17,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:17,510 INFO L481 AbstractCegarLoop]: Abstraction has 20611 states and 29794 transitions. [2020-10-29 14:00:17,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:00:17,510 INFO L276 IsEmpty]: Start isEmpty. Operand 20611 states and 29794 transitions. [2020-10-29 14:00:17,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-29 14:00:17,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:17,519 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:00:17,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 14:00:17,519 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:17,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:17,520 INFO L82 PathProgramCache]: Analyzing trace with hash 61053849, now seen corresponding path program 1 times [2020-10-29 14:00:17,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:17,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548572364] [2020-10-29 14:00:17,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:17,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:17,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:17,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:17,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:17,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:17,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:17,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:18,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:19,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:20,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:22,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:22,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 14:00:22,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:00:22,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 14:00:22,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:22,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:22,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:00:22,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:00:22,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 14:00:22,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:22,981 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 14:00:22,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:22,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:22,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:22,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:22,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:22,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:22,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:00:22,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:22,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:22,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:22,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:22,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:22,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:23,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:23,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548572364] [2020-10-29 14:00:23,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:23,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:00:23,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945590569] [2020-10-29 14:00:23,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:00:23,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:23,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:00:23,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:00:23,016 INFO L87 Difference]: Start difference. First operand 20611 states and 29794 transitions. Second operand 5 states. [2020-10-29 14:00:23,386 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-29 14:00:27,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:27,011 INFO L93 Difference]: Finished difference Result 37409 states and 54111 transitions. [2020-10-29 14:00:27,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:00:27,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-29 14:00:27,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:27,035 INFO L225 Difference]: With dead ends: 37409 [2020-10-29 14:00:27,035 INFO L226 Difference]: Without dead ends: 21949 [2020-10-29 14:00:27,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:00:27,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21949 states. [2020-10-29 14:00:29,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21949 to 21942. [2020-10-29 14:00:29,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21942 states. [2020-10-29 14:00:29,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21942 states to 21942 states and 31361 transitions. [2020-10-29 14:00:29,476 INFO L78 Accepts]: Start accepts. Automaton has 21942 states and 31361 transitions. Word has length 78 [2020-10-29 14:00:29,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:29,476 INFO L481 AbstractCegarLoop]: Abstraction has 21942 states and 31361 transitions. [2020-10-29 14:00:29,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:00:29,477 INFO L276 IsEmpty]: Start isEmpty. Operand 21942 states and 31361 transitions. [2020-10-29 14:00:29,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 14:00:29,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:29,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:00:29,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 14:00:29,488 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:29,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:29,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1480497188, now seen corresponding path program 1 times [2020-10-29 14:00:29,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:29,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532581811] [2020-10-29 14:00:29,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:29,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:29,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:29,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:29,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:29,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:29,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:29,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:31,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:31,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 14:00:31,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:00:31,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1796 [2020-10-29 14:00:31,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:31,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:31,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:00:31,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-29 14:00:31,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 14:00:31,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:31,670 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 14:00:31,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:31,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:31,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:31,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:31,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:31,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 14:00:31,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:31,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:31,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:31,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:31,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:31,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:31,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:31,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532581811] [2020-10-29 14:00:31,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:31,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 14:00:31,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111369800] [2020-10-29 14:00:31,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 14:00:31,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:31,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 14:00:31,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:00:31,703 INFO L87 Difference]: Start difference. First operand 21942 states and 31361 transitions. Second operand 6 states. [2020-10-29 14:00:32,091 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 14:00:34,710 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-29 14:00:35,089 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-29 14:00:36,891 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-29 14:00:37,230 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 14:00:42,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:42,013 INFO L93 Difference]: Finished difference Result 84185 states and 125629 transitions. [2020-10-29 14:00:42,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 14:00:42,013 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-10-29 14:00:42,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:42,089 INFO L225 Difference]: With dead ends: 84185 [2020-10-29 14:00:42,089 INFO L226 Difference]: Without dead ends: 66522 [2020-10-29 14:00:42,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-10-29 14:00:42,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66522 states. [2020-10-29 14:00:47,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66522 to 37979. [2020-10-29 14:00:47,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37979 states. [2020-10-29 14:00:47,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37979 states to 37979 states and 55124 transitions. [2020-10-29 14:00:47,109 INFO L78 Accepts]: Start accepts. Automaton has 37979 states and 55124 transitions. Word has length 79 [2020-10-29 14:00:47,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:47,109 INFO L481 AbstractCegarLoop]: Abstraction has 37979 states and 55124 transitions. [2020-10-29 14:00:47,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 14:00:47,109 INFO L276 IsEmpty]: Start isEmpty. Operand 37979 states and 55124 transitions. [2020-10-29 14:00:47,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 14:00:47,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:47,130 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:00:47,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 14:00:47,130 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:47,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:47,131 INFO L82 PathProgramCache]: Analyzing trace with hash -561036809, now seen corresponding path program 1 times [2020-10-29 14:00:47,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:47,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061333478] [2020-10-29 14:00:47,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:47,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:47,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:47,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:47,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:47,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:47,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:47,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:47,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:47,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:49,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:49,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 14:00:49,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:00:49,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2274 [2020-10-29 14:00:49,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:49,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:49,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:00:49,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-29 14:00:49,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 14:00:49,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:49,850 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 14:00:49,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:49,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:49,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:49,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:49,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:49,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:49,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 14:00:49,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:49,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:49,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:49,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:49,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:49,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:49,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:49,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061333478] [2020-10-29 14:00:49,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:49,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:00:49,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888379994] [2020-10-29 14:00:49,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:00:49,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:49,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:00:49,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:00:49,888 INFO L87 Difference]: Start difference. First operand 37979 states and 55124 transitions. Second operand 5 states. [2020-10-29 14:00:50,267 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-29 14:00:53,662 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-29 14:00:59,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:59,796 INFO L93 Difference]: Finished difference Result 100742 states and 150002 transitions. [2020-10-29 14:00:59,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:00:59,797 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-29 14:00:59,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:59,873 INFO L225 Difference]: With dead ends: 100742 [2020-10-29 14:00:59,873 INFO L226 Difference]: Without dead ends: 67274 [2020-10-29 14:00:59,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-29 14:00:59,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67274 states. [2020-10-29 14:01:06,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67274 to 52503. [2020-10-29 14:01:06,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52503 states. [2020-10-29 14:01:07,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52503 states to 52503 states and 76752 transitions. [2020-10-29 14:01:07,044 INFO L78 Accepts]: Start accepts. Automaton has 52503 states and 76752 transitions. Word has length 80 [2020-10-29 14:01:07,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:01:07,044 INFO L481 AbstractCegarLoop]: Abstraction has 52503 states and 76752 transitions. [2020-10-29 14:01:07,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:01:07,044 INFO L276 IsEmpty]: Start isEmpty. Operand 52503 states and 76752 transitions. [2020-10-29 14:01:07,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 14:01:07,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:01:07,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:01:07,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 14:01:07,194 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:01:07,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:01:07,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1955679066, now seen corresponding path program 1 times [2020-10-29 14:01:07,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:01:07,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808026011] [2020-10-29 14:01:07,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:01:07,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:07,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:07,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:07,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:07,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:07,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:08,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:10,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:12,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:12,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 14:01:12,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:01:12,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 14:01:12,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:12,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:12,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:01:12,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:01:12,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 14:01:12,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:12,618 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 14:01:12,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:01:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:12,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:12,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:12,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:01:12,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:01:12,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 14:01:12,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:12,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:12,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:01:12,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:01:12,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:01:12,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:12,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:01:12,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808026011] [2020-10-29 14:01:12,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:01:12,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 14:01:12,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043341882] [2020-10-29 14:01:12,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 14:01:12,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:01:12,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 14:01:12,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 14:01:12,670 INFO L87 Difference]: Start difference. First operand 52503 states and 76752 transitions. Second operand 8 states. [2020-10-29 14:01:13,065 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 14:01:16,869 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-29 14:01:26,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:01:26,725 INFO L93 Difference]: Finished difference Result 131783 states and 193700 transitions. [2020-10-29 14:01:26,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 14:01:26,726 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-10-29 14:01:26,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:01:26,836 INFO L225 Difference]: With dead ends: 131783 [2020-10-29 14:01:26,836 INFO L226 Difference]: Without dead ends: 83337 [2020-10-29 14:01:27,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-29 14:01:27,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83337 states. [2020-10-29 14:01:34,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83337 to 52591. [2020-10-29 14:01:34,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52591 states. [2020-10-29 14:01:34,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52591 states to 52591 states and 75748 transitions. [2020-10-29 14:01:34,864 INFO L78 Accepts]: Start accepts. Automaton has 52591 states and 75748 transitions. Word has length 80 [2020-10-29 14:01:34,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:01:34,864 INFO L481 AbstractCegarLoop]: Abstraction has 52591 states and 75748 transitions. [2020-10-29 14:01:34,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 14:01:34,864 INFO L276 IsEmpty]: Start isEmpty. Operand 52591 states and 75748 transitions. [2020-10-29 14:01:34,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 14:01:34,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:01:34,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:01:34,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 14:01:34,881 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:01:34,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:01:34,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1747359950, now seen corresponding path program 1 times [2020-10-29 14:01:34,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:01:34,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344481202] [2020-10-29 14:01:34,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:01:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:34,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:34,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:34,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:34,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:35,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:36,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:37,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking...