/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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=BIGGEST --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 -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:57:43,451 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:57:43,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:57:43,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:57:43,479 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:57:43,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:57:43,481 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:57:43,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:57:43,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:57:43,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:57:43,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:57:43,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:57:43,488 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:57:43,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:57:43,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:57:43,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:57:43,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:57:43,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:57:43,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:57:43,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:57:43,507 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:57:43,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:57:43,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:57:43,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:57:43,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:57:43,519 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:57:43,520 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:57:43,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:57:43,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:57:43,525 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:57:43,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:57:43,526 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:57:43,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:57:43,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:57:43,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:57:43,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:57:43,531 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:57:43,532 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:57:43,532 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:57:43,533 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:57:43,534 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:57:43,535 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 [2020-10-12 19:57:43,587 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:57:43,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:57:43,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:57:43,589 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:57:43,589 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:57:43,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:57:43,590 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:57:43,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:57:43,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:57:43,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:57:43,593 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:57:43,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:57:43,594 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:57:43,594 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:57:43,594 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:57:43,594 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:57:43,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:57:43,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:57:43,595 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:57:43,595 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:57:43,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:57:43,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:57:43,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:57:43,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:57:43,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:57:43,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:57:43,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:57:43,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:57:43,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:57:43,597 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:57:43,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:57:43,896 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:57:43,900 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:57:43,901 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:57:43,902 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:57:43,902 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2020-10-12 19:57:43,966 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e0823011/c72a2e515f2549138607ea5e3a6ebb89/FLAGa9ea2a5e5 [2020-10-12 19:57:44,524 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:57:44,525 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2020-10-12 19:57:44,545 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e0823011/c72a2e515f2549138607ea5e3a6ebb89/FLAGa9ea2a5e5 [2020-10-12 19:57:44,819 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e0823011/c72a2e515f2549138607ea5e3a6ebb89 [2020-10-12 19:57:44,828 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:57:44,829 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:57:44,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:57:44,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:57:44,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:57:44,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:57:44" (1/1) ... [2020-10-12 19:57:44,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ef601eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:57:44, skipping insertion in model container [2020-10-12 19:57:44,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:57:44" (1/1) ... [2020-10-12 19:57:44,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:57:44,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:57:45,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:57:45,538 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:57:45,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:57:45,921 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:57:45,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:57:45 WrapperNode [2020-10-12 19:57:45,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:57:45,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:57:45,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:57:45,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:57:45,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:57:45" (1/1) ... [2020-10-12 19:57:45,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:57:45" (1/1) ... [2020-10-12 19:57:45,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:57:45" (1/1) ... [2020-10-12 19:57:45,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:57:45" (1/1) ... [2020-10-12 19:57:45,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:57:45" (1/1) ... [2020-10-12 19:57:46,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:57:45" (1/1) ... [2020-10-12 19:57:46,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:57:45" (1/1) ... [2020-10-12 19:57:46,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:57:46,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:57:46,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:57:46,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:57:46,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:57:45" (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 [2020-10-12 19:57:46,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:57:46,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:57:46,131 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:57:46,131 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:57:46,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:57:46,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:57:46,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:57:46,133 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:57:46,133 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:57:46,134 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:57:46,134 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:57:46,134 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:57:46,134 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:57:46,134 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:57:46,134 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:57:46,135 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:57:46,136 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:57:46,136 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:57:46,137 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:57:46,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:57:46,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:57:47,624 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:57:47,625 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:57:47,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:57:47 BoogieIcfgContainer [2020-10-12 19:57:47,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:57:47,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:57:47,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:57:47,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:57:47,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:57:44" (1/3) ... [2020-10-12 19:57:47,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@619cf5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:57:47, skipping insertion in model container [2020-10-12 19:57:47,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:57:45" (2/3) ... [2020-10-12 19:57:47,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@619cf5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:57:47, skipping insertion in model container [2020-10-12 19:57:47,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:57:47" (3/3) ... [2020-10-12 19:57:47,642 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2020-10-12 19:57:47,653 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:57:47,662 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:57:47,678 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:57:47,707 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:57:47,707 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:57:47,707 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:57:47,707 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:57:47,708 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:57:47,708 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:57:47,708 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:57:47,708 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:57:47,736 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states. [2020-10-12 19:57:47,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-12 19:57:47,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:57:47,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:57:47,758 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:57:47,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:57:47,765 INFO L82 PathProgramCache]: Analyzing trace with hash -941519177, now seen corresponding path program 1 times [2020-10-12 19:57:47,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:57:47,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734220369] [2020-10-12 19:57:47,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:57:48,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:57:48,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:48,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:48,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:48,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:48,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:48,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:49,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:49,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:49,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:50,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:52,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:53,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:57:53,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 19:57:53,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:57:53,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-12 19:57:53,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:57:53,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:57:53,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-12 19:57:53,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 19:57:53,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:57:53,492 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:57:53,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:57:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:57:53,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:53,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:57:53,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:57:53,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:57:53,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 19:57:53,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:57:53,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:57:53,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:57:53,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:57:53,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:57:53,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:57:53,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734220369] [2020-10-12 19:57:53,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:57:53,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:57:53,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037667751] [2020-10-12 19:57:53,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:57:53,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:57:53,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:57:53,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:57:53,600 INFO L87 Difference]: Start difference. First operand 429 states. Second operand 5 states. [2020-10-12 19:57:55,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:57:55,381 INFO L93 Difference]: Finished difference Result 674 states and 1090 transitions. [2020-10-12 19:57:55,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:57:55,383 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-12 19:57:55,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:57:55,403 INFO L225 Difference]: With dead ends: 674 [2020-10-12 19:57:55,403 INFO L226 Difference]: Without dead ends: 425 [2020-10-12 19:57:55,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:57:55,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2020-10-12 19:57:55,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2020-10-12 19:57:55,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-10-12 19:57:55,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 682 transitions. [2020-10-12 19:57:55,489 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 682 transitions. Word has length 111 [2020-10-12 19:57:55,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:57:55,489 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 682 transitions. [2020-10-12 19:57:55,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:57:55,490 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 682 transitions. [2020-10-12 19:57:55,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-12 19:57:55,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:57:55,497 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:57:55,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:57:55,497 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:57:55,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:57:55,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1439427605, now seen corresponding path program 1 times [2020-10-12 19:57:55,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:57:55,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822872771] [2020-10-12 19:57:55,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:57:55,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:57:55,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:55,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:55,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:55,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:55,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:55,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:55,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:55,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:56,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:56,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:57,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:00,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:58:00,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 19:58:00,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:58:00,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 19:58:00,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:58:00,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:58:00,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 19:58:00,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 19:58:00,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-12 19:58:00,726 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:58:00,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:58:00,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:58:00,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:00,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:58:00,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:58:00,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:58:00,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:58:00,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:58:00,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:58:00,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:58:00,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:58:00,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:58:00,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:58:00,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822872771] [2020-10-12 19:58:00,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:58:00,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:58:00,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337569927] [2020-10-12 19:58:00,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:58:00,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:58:00,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:58:00,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:58:00,764 INFO L87 Difference]: Start difference. First operand 425 states and 682 transitions. Second operand 5 states. [2020-10-12 19:58:02,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:58:02,320 INFO L93 Difference]: Finished difference Result 820 states and 1310 transitions. [2020-10-12 19:58:02,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 19:58:02,321 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-12 19:58:02,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:58:02,326 INFO L225 Difference]: With dead ends: 820 [2020-10-12 19:58:02,326 INFO L226 Difference]: Without dead ends: 425 [2020-10-12 19:58:02,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:58:02,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2020-10-12 19:58:02,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2020-10-12 19:58:02,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-10-12 19:58:02,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 658 transitions. [2020-10-12 19:58:02,388 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 658 transitions. Word has length 112 [2020-10-12 19:58:02,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:58:02,388 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 658 transitions. [2020-10-12 19:58:02,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:58:02,389 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 658 transitions. [2020-10-12 19:58:02,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-12 19:58:02,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:58:02,393 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:58:02,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:58:02,394 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:58:02,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:58:02,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1701198998, now seen corresponding path program 1 times [2020-10-12 19:58:02,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:58:02,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980164774] [2020-10-12 19:58:02,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:58:02,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:58:02,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:02,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:02,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:02,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:02,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:02,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:02,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:02,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:02,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:02,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:03,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:04,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:04,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:07,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:58:07,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-12 19:58:07,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:58:07,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:58:07,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:58:07,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:58:07,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 19:58:07,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 19:58:07,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:58:07,640 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:58:07,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:58:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:58:07,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:07,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:58:07,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:58:07,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:58:07,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:58:07,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:58:07,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:58:07,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:58:07,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:58:07,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:58:07,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:58:07,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980164774] [2020-10-12 19:58:07,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:58:07,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:58:07,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101082523] [2020-10-12 19:58:07,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:58:07,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:58:07,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:58:07,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:58:07,691 INFO L87 Difference]: Start difference. First operand 425 states and 658 transitions. Second operand 7 states. [2020-10-12 19:58:07,861 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-12 19:58:10,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:58:10,128 INFO L93 Difference]: Finished difference Result 2138 states and 3379 transitions. [2020-10-12 19:58:10,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 19:58:10,130 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2020-10-12 19:58:10,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:58:10,147 INFO L225 Difference]: With dead ends: 2138 [2020-10-12 19:58:10,147 INFO L226 Difference]: Without dead ends: 1820 [2020-10-12 19:58:10,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:58:10,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1820 states. [2020-10-12 19:58:10,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1820 to 798. [2020-10-12 19:58:10,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 798 states. [2020-10-12 19:58:10,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1245 transitions. [2020-10-12 19:58:10,264 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1245 transitions. Word has length 135 [2020-10-12 19:58:10,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:58:10,267 INFO L479 AbstractCegarLoop]: Abstraction has 798 states and 1245 transitions. [2020-10-12 19:58:10,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:58:10,268 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1245 transitions. [2020-10-12 19:58:10,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-12 19:58:10,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:58:10,276 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:58:10,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:58:10,276 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:58:10,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:58:10,277 INFO L82 PathProgramCache]: Analyzing trace with hash 963385629, now seen corresponding path program 1 times [2020-10-12 19:58:10,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:58:10,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646254415] [2020-10-12 19:58:10,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:58:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:58:10,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:10,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:10,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:10,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:10,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:10,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:10,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:10,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:10,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:11,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:11,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:11,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:11,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:15,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:58:15,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-12 19:58:15,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:58:15,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 19:58:15,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:58:15,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:58:15,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 19:58:15,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 19:58:15,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:58:15,544 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:58:15,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:58:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:58:15,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:15,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:58:15,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:58:15,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:58:15,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:58:15,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:58:15,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:58:15,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:58:15,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:58:15,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:58:15,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:58:15,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646254415] [2020-10-12 19:58:15,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:58:15,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:58:15,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061546846] [2020-10-12 19:58:15,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:58:15,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:58:15,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:58:15,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:58:15,617 INFO L87 Difference]: Start difference. First operand 798 states and 1245 transitions. Second operand 7 states. [2020-10-12 19:58:15,873 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 19:58:18,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:58:18,265 INFO L93 Difference]: Finished difference Result 3005 states and 4742 transitions. [2020-10-12 19:58:18,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 19:58:18,265 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 138 [2020-10-12 19:58:18,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:58:18,284 INFO L225 Difference]: With dead ends: 3005 [2020-10-12 19:58:18,285 INFO L226 Difference]: Without dead ends: 2688 [2020-10-12 19:58:18,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:58:18,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2688 states. [2020-10-12 19:58:18,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2688 to 1366. [2020-10-12 19:58:18,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1366 states. [2020-10-12 19:58:18,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 2143 transitions. [2020-10-12 19:58:18,404 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 2143 transitions. Word has length 138 [2020-10-12 19:58:18,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:58:18,405 INFO L479 AbstractCegarLoop]: Abstraction has 1366 states and 2143 transitions. [2020-10-12 19:58:18,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:58:18,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 2143 transitions. [2020-10-12 19:58:18,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-12 19:58:18,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:58:18,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:58:18,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:58:18,414 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:58:18,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:58:18,415 INFO L82 PathProgramCache]: Analyzing trace with hash -984566756, now seen corresponding path program 1 times [2020-10-12 19:58:18,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:58:18,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714296838] [2020-10-12 19:58:18,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:58:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:58:18,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:18,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:18,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:18,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:18,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:18,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:18,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:18,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:18,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:19,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:19,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:19,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:23,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:58:23,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-12 19:58:23,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:58:23,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:58:23,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:58:23,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:58:23,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:58:23,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-12 19:58:23,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:58:23,779 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:58:23,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:58:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:58:23,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:23,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:58:23,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:58:23,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:58:23,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:58:23,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:58:23,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:58:23,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:58:23,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:58:23,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:58:23,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:58:23,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714296838] [2020-10-12 19:58:23,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:58:23,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:58:23,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571367146] [2020-10-12 19:58:23,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:58:23,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:58:23,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:58:23,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:58:23,865 INFO L87 Difference]: Start difference. First operand 1366 states and 2143 transitions. Second operand 8 states. [2020-10-12 19:58:24,019 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-12 19:58:26,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:58:26,947 INFO L93 Difference]: Finished difference Result 7680 states and 12091 transitions. [2020-10-12 19:58:26,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:58:26,951 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 139 [2020-10-12 19:58:26,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:58:26,982 INFO L225 Difference]: With dead ends: 7680 [2020-10-12 19:58:26,982 INFO L226 Difference]: Without dead ends: 6432 [2020-10-12 19:58:26,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:58:26,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6432 states. [2020-10-12 19:58:27,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6432 to 1615. [2020-10-12 19:58:27,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1615 states. [2020-10-12 19:58:27,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 2494 transitions. [2020-10-12 19:58:27,124 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 2494 transitions. Word has length 139 [2020-10-12 19:58:27,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:58:27,124 INFO L479 AbstractCegarLoop]: Abstraction has 1615 states and 2494 transitions. [2020-10-12 19:58:27,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:58:27,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 2494 transitions. [2020-10-12 19:58:27,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-12 19:58:27,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:58:27,130 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:58:27,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:58:27,130 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:58:27,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:58:27,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1775199334, now seen corresponding path program 1 times [2020-10-12 19:58:27,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:58:27,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491463280] [2020-10-12 19:58:27,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:58:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:58:27,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:27,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:27,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:27,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:27,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:27,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:27,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:27,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:27,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:27,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:28,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:29,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:32,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:58:32,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-12 19:58:32,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:58:32,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:58:32,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:58:32,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:58:32,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 19:58:32,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 19:58:32,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:58:32,296 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:58:32,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:58:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:58:32,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:32,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:58:32,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:58:32,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:58:32,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:58:32,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:58:32,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:58:32,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:58:32,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:58:32,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:58:32,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:58:32,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491463280] [2020-10-12 19:58:32,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:58:32,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 19:58:32,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916494541] [2020-10-12 19:58:32,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 19:58:32,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:58:32,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 19:58:32,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 19:58:32,339 INFO L87 Difference]: Start difference. First operand 1615 states and 2494 transitions. Second operand 4 states. [2020-10-12 19:58:32,491 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-12 19:58:34,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:58:34,249 INFO L93 Difference]: Finished difference Result 4165 states and 6444 transitions. [2020-10-12 19:58:34,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:58:34,250 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2020-10-12 19:58:34,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:58:34,264 INFO L225 Difference]: With dead ends: 4165 [2020-10-12 19:58:34,265 INFO L226 Difference]: Without dead ends: 2627 [2020-10-12 19:58:34,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:58:34,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2627 states. [2020-10-12 19:58:34,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2627 to 2422. [2020-10-12 19:58:34,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2422 states. [2020-10-12 19:58:34,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2422 states to 2422 states and 3721 transitions. [2020-10-12 19:58:34,417 INFO L78 Accepts]: Start accepts. Automaton has 2422 states and 3721 transitions. Word has length 139 [2020-10-12 19:58:34,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:58:34,418 INFO L479 AbstractCegarLoop]: Abstraction has 2422 states and 3721 transitions. [2020-10-12 19:58:34,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 19:58:34,418 INFO L276 IsEmpty]: Start isEmpty. Operand 2422 states and 3721 transitions. [2020-10-12 19:58:34,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-12 19:58:34,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:58:34,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:58:34,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:58:34,425 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:58:34,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:58:34,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1267879915, now seen corresponding path program 1 times [2020-10-12 19:58:34,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:58:34,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085104376] [2020-10-12 19:58:34,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:58:34,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:58:34,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:34,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:34,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:34,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:34,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:34,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:34,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:34,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:34,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:35,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:36,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:39,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:58:39,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 19:58:39,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:58:39,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 19:58:39,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:58:39,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:58:39,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-12 19:58:39,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 19:58:39,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:58:39,652 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:58:39,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:58:39,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:58:39,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:39,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:58:39,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:58:39,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:58:39,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:58:39,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:58:39,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:58:39,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:58:39,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:58:39,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:58:39,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:58:39,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085104376] [2020-10-12 19:58:39,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:58:39,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 19:58:39,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431027518] [2020-10-12 19:58:39,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 19:58:39,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:58:39,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 19:58:39,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 19:58:39,690 INFO L87 Difference]: Start difference. First operand 2422 states and 3721 transitions. Second operand 4 states. [2020-10-12 19:58:41,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:58:41,244 INFO L93 Difference]: Finished difference Result 3466 states and 5343 transitions. [2020-10-12 19:58:41,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 19:58:41,245 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-10-12 19:58:41,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:58:41,251 INFO L225 Difference]: With dead ends: 3466 [2020-10-12 19:58:41,251 INFO L226 Difference]: Without dead ends: 1502 [2020-10-12 19:58:41,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 19:58:41,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2020-10-12 19:58:41,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1491. [2020-10-12 19:58:41,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1491 states. [2020-10-12 19:58:41,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 2278 transitions. [2020-10-12 19:58:41,355 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 2278 transitions. Word has length 142 [2020-10-12 19:58:41,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:58:41,356 INFO L479 AbstractCegarLoop]: Abstraction has 1491 states and 2278 transitions. [2020-10-12 19:58:41,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 19:58:41,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 2278 transitions. [2020-10-12 19:58:41,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-12 19:58:41,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:58:41,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:58:41,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:58:41,362 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:58:41,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:58:41,363 INFO L82 PathProgramCache]: Analyzing trace with hash -664883353, now seen corresponding path program 1 times [2020-10-12 19:58:41,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:58:41,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676585043] [2020-10-12 19:58:41,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:58:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:58:41,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:41,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:41,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:41,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:41,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:41,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:41,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:41,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:41,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:42,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:46,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:46,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:58:46,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 19:58:46,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:58:46,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 19:58:46,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:58:46,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:58:46,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 19:58:46,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 19:58:46,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:58:46,533 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:58:46,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:58:46,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:58:46,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:46,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:58:46,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:58:46,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:58:46,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:58:46,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:58:46,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:58:46,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:58:46,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:58:46,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:58:46,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:58:46,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676585043] [2020-10-12 19:58:46,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:58:46,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 19:58:46,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071460069] [2020-10-12 19:58:46,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 19:58:46,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:58:46,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 19:58:46,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 19:58:46,561 INFO L87 Difference]: Start difference. First operand 1491 states and 2278 transitions. Second operand 4 states. [2020-10-12 19:58:46,722 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-12 19:58:48,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:58:48,151 INFO L93 Difference]: Finished difference Result 3771 states and 5764 transitions. [2020-10-12 19:58:48,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:58:48,152 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-10-12 19:58:48,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:58:48,160 INFO L225 Difference]: With dead ends: 3771 [2020-10-12 19:58:48,160 INFO L226 Difference]: Without dead ends: 2383 [2020-10-12 19:58:48,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:58:48,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2383 states. [2020-10-12 19:58:48,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2383 to 2381. [2020-10-12 19:58:48,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2381 states. [2020-10-12 19:58:48,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2381 states to 2381 states and 3605 transitions. [2020-10-12 19:58:48,311 INFO L78 Accepts]: Start accepts. Automaton has 2381 states and 3605 transitions. Word has length 142 [2020-10-12 19:58:48,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:58:48,311 INFO L479 AbstractCegarLoop]: Abstraction has 2381 states and 3605 transitions. [2020-10-12 19:58:48,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 19:58:48,312 INFO L276 IsEmpty]: Start isEmpty. Operand 2381 states and 3605 transitions. [2020-10-12 19:58:48,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-12 19:58:48,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:58:48,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:58:48,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:58:48,318 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:58:48,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:58:48,318 INFO L82 PathProgramCache]: Analyzing trace with hash 2080438475, now seen corresponding path program 1 times [2020-10-12 19:58:48,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:58:48,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [790446239] [2020-10-12 19:58:48,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:58:48,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:58:48,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:48,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:48,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:48,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:48,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:48,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:48,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:48,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:49,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:53,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:58:53,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-12 19:58:53,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:58:53,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 19:58:53,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:58:53,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:58:53,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-12 19:58:53,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 19:58:53,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:58:53,524 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:58:53,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:58:53,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:58:53,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:53,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:58:53,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:58:53,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:58:53,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:58:53,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:58:53,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:58:53,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:58:53,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:58:53,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:58:53,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:58:53,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [790446239] [2020-10-12 19:58:53,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:58:53,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 19:58:53,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82389249] [2020-10-12 19:58:53,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 19:58:53,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:58:53,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 19:58:53,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 19:58:53,554 INFO L87 Difference]: Start difference. First operand 2381 states and 3605 transitions. Second operand 4 states. [2020-10-12 19:58:53,713 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-12 19:58:55,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:58:55,326 INFO L93 Difference]: Finished difference Result 6599 states and 9986 transitions. [2020-10-12 19:58:55,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:58:55,326 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2020-10-12 19:58:55,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:58:55,342 INFO L225 Difference]: With dead ends: 6599 [2020-10-12 19:58:55,342 INFO L226 Difference]: Without dead ends: 4415 [2020-10-12 19:58:55,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:58:55,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4415 states. [2020-10-12 19:58:55,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4415 to 4061. [2020-10-12 19:58:55,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4061 states. [2020-10-12 19:58:55,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4061 states to 4061 states and 6140 transitions. [2020-10-12 19:58:55,626 INFO L78 Accepts]: Start accepts. Automaton has 4061 states and 6140 transitions. Word has length 145 [2020-10-12 19:58:55,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:58:55,627 INFO L479 AbstractCegarLoop]: Abstraction has 4061 states and 6140 transitions. [2020-10-12 19:58:55,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 19:58:55,627 INFO L276 IsEmpty]: Start isEmpty. Operand 4061 states and 6140 transitions. [2020-10-12 19:58:55,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-12 19:58:55,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:58:55,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:58:55,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:58:55,635 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:58:55,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:58:55,635 INFO L82 PathProgramCache]: Analyzing trace with hash -283574053, now seen corresponding path program 1 times [2020-10-12 19:58:55,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:58:55,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270878940] [2020-10-12 19:58:55,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:58:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:58:55,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:55,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:55,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:55,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:55,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:56,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:57,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:57,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:00,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:59:00,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-12 19:59:00,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:59:00,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:59:00,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:59:00,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:59:00,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-12 19:59:00,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 19:59:00,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:59:00,828 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:59:00,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:59:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:59:00,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:00,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:59:00,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:59:00,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:59:00,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:59:00,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:59:00,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:59:00,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:59:00,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:59:00,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:59:00,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:59:00,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270878940] [2020-10-12 19:59:00,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:59:00,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:59:00,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65996081] [2020-10-12 19:59:00,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:59:00,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:59:00,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:59:00,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:59:00,859 INFO L87 Difference]: Start difference. First operand 4061 states and 6140 transitions. Second operand 5 states. [2020-10-12 19:59:02,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:59:02,708 INFO L93 Difference]: Finished difference Result 5689 states and 8593 transitions. [2020-10-12 19:59:02,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 19:59:02,709 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-12 19:59:02,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:59:02,740 INFO L225 Difference]: With dead ends: 5689 [2020-10-12 19:59:02,740 INFO L226 Difference]: Without dead ends: 5687 [2020-10-12 19:59:02,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:59:02,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5687 states. [2020-10-12 19:59:03,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5687 to 4109. [2020-10-12 19:59:03,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4109 states. [2020-10-12 19:59:03,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 6188 transitions. [2020-10-12 19:59:03,137 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 6188 transitions. Word has length 147 [2020-10-12 19:59:03,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:59:03,138 INFO L479 AbstractCegarLoop]: Abstraction has 4109 states and 6188 transitions. [2020-10-12 19:59:03,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:59:03,138 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 6188 transitions. [2020-10-12 19:59:03,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-12 19:59:03,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:59:03,146 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:59:03,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:59:03,146 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:59:03,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:59:03,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1537798989, now seen corresponding path program 1 times [2020-10-12 19:59:03,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:59:03,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228564004] [2020-10-12 19:59:03,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:59:03,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:59:03,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:03,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:03,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:03,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:03,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:03,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:03,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:03,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:03,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:07,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:08,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:59:08,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-12 19:59:08,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:59:08,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:59:08,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:59:08,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:59:08,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:59:08,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-12 19:59:08,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:59:08,487 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:59:08,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:59:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:59:08,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:08,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:59:08,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:59:08,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:59:08,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:59:08,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:59:08,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:59:08,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:59:08,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:59:08,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:59:08,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:59:08,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228564004] [2020-10-12 19:59:08,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:59:08,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:59:08,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500725895] [2020-10-12 19:59:08,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:59:08,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:59:08,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:59:08,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:59:08,581 INFO L87 Difference]: Start difference. First operand 4109 states and 6188 transitions. Second operand 8 states. [2020-10-12 19:59:08,748 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-12 19:59:11,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:59:11,797 INFO L93 Difference]: Finished difference Result 17433 states and 26273 transitions. [2020-10-12 19:59:11,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:59:11,798 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 147 [2020-10-12 19:59:11,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:59:11,828 INFO L225 Difference]: With dead ends: 17433 [2020-10-12 19:59:11,829 INFO L226 Difference]: Without dead ends: 13438 [2020-10-12 19:59:11,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:59:11,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13438 states. [2020-10-12 19:59:12,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13438 to 4581. [2020-10-12 19:59:12,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4581 states. [2020-10-12 19:59:12,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4581 states to 4581 states and 6797 transitions. [2020-10-12 19:59:12,316 INFO L78 Accepts]: Start accepts. Automaton has 4581 states and 6797 transitions. Word has length 147 [2020-10-12 19:59:12,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:59:12,316 INFO L479 AbstractCegarLoop]: Abstraction has 4581 states and 6797 transitions. [2020-10-12 19:59:12,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:59:12,317 INFO L276 IsEmpty]: Start isEmpty. Operand 4581 states and 6797 transitions. [2020-10-12 19:59:12,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-12 19:59:12,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:59:12,324 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:59:12,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 19:59:12,325 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:59:12,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:59:12,325 INFO L82 PathProgramCache]: Analyzing trace with hash 110813922, now seen corresponding path program 1 times [2020-10-12 19:59:12,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:59:12,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527031249] [2020-10-12 19:59:12,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:59:12,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:59:12,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:12,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:12,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:12,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:12,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:12,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:12,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:12,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:14,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:14,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:14,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:17,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:59:17,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-12 19:59:17,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:59:17,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:59:17,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:59:17,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:59:17,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:59:17,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 19:59:17,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:59:17,625 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:59:17,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:59:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:59:17,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:17,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:59:17,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:59:17,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:59:17,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:59:17,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:59:17,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:59:17,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:59:17,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:59:17,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:59:17,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:59:17,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527031249] [2020-10-12 19:59:17,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:59:17,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:59:17,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183278417] [2020-10-12 19:59:17,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:59:17,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:59:17,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:59:17,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:59:17,685 INFO L87 Difference]: Start difference. First operand 4581 states and 6797 transitions. Second operand 8 states. [2020-10-12 19:59:17,837 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-12 19:59:20,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:59:20,064 INFO L93 Difference]: Finished difference Result 11870 states and 17575 transitions. [2020-10-12 19:59:20,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 19:59:20,065 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 147 [2020-10-12 19:59:20,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:59:20,085 INFO L225 Difference]: With dead ends: 11870 [2020-10-12 19:59:20,085 INFO L226 Difference]: Without dead ends: 7364 [2020-10-12 19:59:20,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:59:20,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7364 states. [2020-10-12 19:59:20,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7364 to 4517. [2020-10-12 19:59:20,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4517 states. [2020-10-12 19:59:20,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4517 states to 4517 states and 6585 transitions. [2020-10-12 19:59:20,531 INFO L78 Accepts]: Start accepts. Automaton has 4517 states and 6585 transitions. Word has length 147 [2020-10-12 19:59:20,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:59:20,531 INFO L479 AbstractCegarLoop]: Abstraction has 4517 states and 6585 transitions. [2020-10-12 19:59:20,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:59:20,532 INFO L276 IsEmpty]: Start isEmpty. Operand 4517 states and 6585 transitions. [2020-10-12 19:59:20,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-12 19:59:20,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:59:20,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:59:20,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 19:59:20,538 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:59:20,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:59:20,539 INFO L82 PathProgramCache]: Analyzing trace with hash -191240990, now seen corresponding path program 1 times [2020-10-12 19:59:20,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:59:20,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780994180] [2020-10-12 19:59:20,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:59:20,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:59:20,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:20,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:20,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:20,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:20,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:20,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:22,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:22,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:25,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:59:25,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-12 19:59:25,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:59:25,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:59:25,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:59:25,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:59:25,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 19:59:25,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-12 19:59:25,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:59:25,941 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:59:25,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:59:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:59:25,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:25,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:59:25,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:59:25,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:59:25,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:59:25,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:59:25,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:59:25,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:59:25,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:59:25,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:59:25,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:59:26,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780994180] [2020-10-12 19:59:26,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:59:26,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:59:26,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201337935] [2020-10-12 19:59:26,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:59:26,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:59:26,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:59:26,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:59:26,001 INFO L87 Difference]: Start difference. First operand 4517 states and 6585 transitions. Second operand 7 states. [2020-10-12 19:59:26,155 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-12 19:59:30,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:59:30,560 INFO L93 Difference]: Finished difference Result 16769 states and 24511 transitions. [2020-10-12 19:59:30,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 19:59:30,561 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 148 [2020-10-12 19:59:30,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:59:30,584 INFO L225 Difference]: With dead ends: 16769 [2020-10-12 19:59:30,584 INFO L226 Difference]: Without dead ends: 12452 [2020-10-12 19:59:30,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:59:30,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12452 states. [2020-10-12 19:59:31,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12452 to 12444. [2020-10-12 19:59:31,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12444 states. [2020-10-12 19:59:31,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12444 states to 12444 states and 18045 transitions. [2020-10-12 19:59:31,696 INFO L78 Accepts]: Start accepts. Automaton has 12444 states and 18045 transitions. Word has length 148 [2020-10-12 19:59:31,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:59:31,697 INFO L479 AbstractCegarLoop]: Abstraction has 12444 states and 18045 transitions. [2020-10-12 19:59:31,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:59:31,697 INFO L276 IsEmpty]: Start isEmpty. Operand 12444 states and 18045 transitions. [2020-10-12 19:59:31,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-12 19:59:31,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:59:31,711 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:59:31,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 19:59:31,711 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:59:31,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:59:31,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1963960757, now seen corresponding path program 1 times [2020-10-12 19:59:31,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:59:31,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718620895] [2020-10-12 19:59:31,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:59:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:59:31,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:31,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:31,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:31,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:31,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:31,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:32,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:32,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:34,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:34,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:36,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:59:36,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-12 19:59:36,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:59:36,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:59:36,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:59:36,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:59:36,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:59:36,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-12 19:59:36,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:59:36,948 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:59:36,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:59:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:59:36,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:36,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:59:36,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:59:36,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:59:36,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:59:36,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:59:36,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:59:36,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:59:36,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:59:36,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:59:36,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:59:36,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718620895] [2020-10-12 19:59:36,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:59:36,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:59:36,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101922312] [2020-10-12 19:59:36,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:59:36,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:59:36,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:59:36,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:59:36,995 INFO L87 Difference]: Start difference. First operand 12444 states and 18045 transitions. Second operand 8 states. [2020-10-12 19:59:37,184 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-12 19:59:42,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:59:42,825 INFO L93 Difference]: Finished difference Result 42941 states and 62831 transitions. [2020-10-12 19:59:42,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:59:42,826 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 148 [2020-10-12 19:59:42,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:59:42,871 INFO L225 Difference]: With dead ends: 42941 [2020-10-12 19:59:42,871 INFO L226 Difference]: Without dead ends: 38959 [2020-10-12 19:59:42,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-10-12 19:59:42,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38959 states. [2020-10-12 19:59:44,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38959 to 13706. [2020-10-12 19:59:44,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13706 states. [2020-10-12 19:59:44,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13706 states to 13706 states and 19945 transitions. [2020-10-12 19:59:44,184 INFO L78 Accepts]: Start accepts. Automaton has 13706 states and 19945 transitions. Word has length 148 [2020-10-12 19:59:44,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:59:44,184 INFO L479 AbstractCegarLoop]: Abstraction has 13706 states and 19945 transitions. [2020-10-12 19:59:44,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:59:44,185 INFO L276 IsEmpty]: Start isEmpty. Operand 13706 states and 19945 transitions. [2020-10-12 19:59:44,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-12 19:59:44,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:59:44,197 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:59:44,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 19:59:44,197 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:59:44,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:59:44,198 INFO L82 PathProgramCache]: Analyzing trace with hash 2008237111, now seen corresponding path program 1 times [2020-10-12 19:59:44,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:59:44,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990628280] [2020-10-12 19:59:44,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:59:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:59:44,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:44,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:44,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:44,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:44,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:44,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:44,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:44,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:44,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:45,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:49,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:59:49,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-12 19:59:49,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:59:49,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 19:59:49,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:59:49,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:59:49,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:59:49,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-12 19:59:49,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:59:49,486 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:59:49,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:59:49,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:59:49,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:49,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:59:49,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:59:49,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:59:49,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:59:49,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:59:49,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:59:49,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:59:49,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:59:49,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:59:49,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:59:49,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990628280] [2020-10-12 19:59:49,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:59:49,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:59:49,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306654172] [2020-10-12 19:59:49,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:59:49,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:59:49,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:59:49,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:59:49,551 INFO L87 Difference]: Start difference. First operand 13706 states and 19945 transitions. Second operand 8 states. [2020-10-12 19:59:49,713 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-12 19:59:56,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:59:56,294 INFO L93 Difference]: Finished difference Result 58269 states and 84789 transitions. [2020-10-12 19:59:56,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:59:56,294 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 148 [2020-10-12 19:59:56,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:59:56,343 INFO L225 Difference]: With dead ends: 58269 [2020-10-12 19:59:56,343 INFO L226 Difference]: Without dead ends: 48625 [2020-10-12 19:59:56,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:59:56,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48625 states. [2020-10-12 19:59:59,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48625 to 14986. [2020-10-12 19:59:59,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14986 states. [2020-10-12 19:59:59,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14986 states to 14986 states and 21662 transitions. [2020-10-12 19:59:59,030 INFO L78 Accepts]: Start accepts. Automaton has 14986 states and 21662 transitions. Word has length 148 [2020-10-12 19:59:59,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:59:59,030 INFO L479 AbstractCegarLoop]: Abstraction has 14986 states and 21662 transitions. [2020-10-12 19:59:59,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:59:59,030 INFO L276 IsEmpty]: Start isEmpty. Operand 14986 states and 21662 transitions. [2020-10-12 19:59:59,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-12 19:59:59,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:59:59,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:59:59,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 19:59:59,043 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:59:59,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:59:59,044 INFO L82 PathProgramCache]: Analyzing trace with hash -721181984, now seen corresponding path program 1 times [2020-10-12 19:59:59,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:59:59,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720726240] [2020-10-12 19:59:59,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:59:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:59:59,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:59,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:59,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:59,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:59,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:59,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:59,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:59,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:59,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:02,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:03,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:04,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:04,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-12 20:00:04,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:00:04,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 20:00:04,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:04,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:00:04,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:00:04,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 20:00:04,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:00:04,348 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 20:00:04,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:00:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:04,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:04,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:04,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:00:04,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:00:04,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 20:00:04,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:04,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:00:04,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:00:04,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:00:04,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:00:04,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:00:04,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720726240] [2020-10-12 20:00:04,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:00:04,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 20:00:04,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272278760] [2020-10-12 20:00:04,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:00:04,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:00:04,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:00:04,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:00:04,411 INFO L87 Difference]: Start difference. First operand 14986 states and 21662 transitions. Second operand 8 states. [2020-10-12 20:00:04,579 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-12 20:00:10,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:00:10,389 INFO L93 Difference]: Finished difference Result 46456 states and 67690 transitions. [2020-10-12 20:00:10,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 20:00:10,390 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 148 [2020-10-12 20:00:10,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:00:10,426 INFO L225 Difference]: With dead ends: 46456 [2020-10-12 20:00:10,426 INFO L226 Difference]: Without dead ends: 38156 [2020-10-12 20:00:10,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-12 20:00:10,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38156 states. [2020-10-12 20:00:12,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38156 to 17626. [2020-10-12 20:00:12,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17626 states. [2020-10-12 20:00:12,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17626 states to 17626 states and 25368 transitions. [2020-10-12 20:00:12,114 INFO L78 Accepts]: Start accepts. Automaton has 17626 states and 25368 transitions. Word has length 148 [2020-10-12 20:00:12,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:00:12,114 INFO L479 AbstractCegarLoop]: Abstraction has 17626 states and 25368 transitions. [2020-10-12 20:00:12,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:00:12,114 INFO L276 IsEmpty]: Start isEmpty. Operand 17626 states and 25368 transitions. [2020-10-12 20:00:12,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-12 20:00:12,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:00:12,134 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:00:12,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 20:00:12,134 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:00:12,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:00:12,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1372963420, now seen corresponding path program 1 times [2020-10-12 20:00:12,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:00:12,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014975418] [2020-10-12 20:00:12,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:00:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:12,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:12,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:12,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:12,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:12,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:12,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:12,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:12,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:12,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:12,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:12,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:12,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:13,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:13,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:14,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:14,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:17,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:17,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-12 20:00:17,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 20:00:17,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 20:00:17,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:17,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 20:00:17,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:00:17,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-12 20:00:17,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:00:17,414 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 20:00:17,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:00:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:17,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:17,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:17,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:00:17,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:00:17,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:00:17,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:17,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:00:17,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:00:17,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:00:17,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:00:17,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:00:17,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014975418] [2020-10-12 20:00:17,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:00:17,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 20:00:17,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651176204] [2020-10-12 20:00:17,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 20:00:17,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:00:17,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 20:00:17,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-12 20:00:17,498 INFO L87 Difference]: Start difference. First operand 17626 states and 25368 transitions. Second operand 12 states. [2020-10-12 20:00:17,667 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-12 20:00:37,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:00:37,364 INFO L93 Difference]: Finished difference Result 144779 states and 211150 transitions. [2020-10-12 20:00:37,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-12 20:00:37,365 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 149 [2020-10-12 20:00:37,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:00:39,038 INFO L225 Difference]: With dead ends: 144779 [2020-10-12 20:00:39,038 INFO L226 Difference]: Without dead ends: 127267 [2020-10-12 20:00:39,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=369, Invalid=1191, Unknown=0, NotChecked=0, Total=1560 [2020-10-12 20:00:39,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127267 states. [2020-10-12 20:00:42,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127267 to 29898. [2020-10-12 20:00:42,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29898 states. [2020-10-12 20:00:42,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29898 states to 29898 states and 43040 transitions. [2020-10-12 20:00:42,843 INFO L78 Accepts]: Start accepts. Automaton has 29898 states and 43040 transitions. Word has length 149 [2020-10-12 20:00:42,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:00:42,843 INFO L479 AbstractCegarLoop]: Abstraction has 29898 states and 43040 transitions. [2020-10-12 20:00:42,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 20:00:42,843 INFO L276 IsEmpty]: Start isEmpty. Operand 29898 states and 43040 transitions. [2020-10-12 20:00:42,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-12 20:00:42,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:00:42,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:00:42,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 20:00:42,862 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:00:42,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:00:42,862 INFO L82 PathProgramCache]: Analyzing trace with hash -284643647, now seen corresponding path program 1 times [2020-10-12 20:00:42,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:00:42,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198373269] [2020-10-12 20:00:42,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:00:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:42,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:42,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:42,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:42,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:42,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:42,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:43,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:43,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:43,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:46,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:47,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:47,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-12 20:00:47,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:00:47,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 20:00:47,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:47,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 20:00:47,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:00:47,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 20:00:47,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:00:48,369 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 20:00:48,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:00:48,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:48,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:48,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:48,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:00:48,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:00:48,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:00:48,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:48,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:00:48,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:00:48,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:00:48,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:00:48,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:00:48,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198373269] [2020-10-12 20:00:48,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:00:48,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:00:48,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097441458] [2020-10-12 20:00:48,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:00:48,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:00:48,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:00:48,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:00:48,470 INFO L87 Difference]: Start difference. First operand 29898 states and 43040 transitions. Second operand 10 states. [2020-10-12 20:00:48,685 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-12 20:01:19,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:01:19,437 INFO L93 Difference]: Finished difference Result 199453 states and 289480 transitions. [2020-10-12 20:01:19,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 20:01:19,438 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 149 [2020-10-12 20:01:19,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:01:19,661 INFO L225 Difference]: With dead ends: 199453 [2020-10-12 20:01:19,661 INFO L226 Difference]: Without dead ends: 189010 [2020-10-12 20:01:19,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2020-10-12 20:01:19,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189010 states. [2020-10-12 20:01:24,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189010 to 27946. [2020-10-12 20:01:24,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27946 states. [2020-10-12 20:01:24,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27946 states to 27946 states and 40105 transitions. [2020-10-12 20:01:24,966 INFO L78 Accepts]: Start accepts. Automaton has 27946 states and 40105 transitions. Word has length 149 [2020-10-12 20:01:24,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:01:24,966 INFO L479 AbstractCegarLoop]: Abstraction has 27946 states and 40105 transitions. [2020-10-12 20:01:24,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:01:24,966 INFO L276 IsEmpty]: Start isEmpty. Operand 27946 states and 40105 transitions. [2020-10-12 20:01:24,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-12 20:01:24,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:01:24,982 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:01:24,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 20:01:24,982 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:01:24,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:01:24,983 INFO L82 PathProgramCache]: Analyzing trace with hash 156396522, now seen corresponding path program 1 times [2020-10-12 20:01:24,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:01:24,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015410383] [2020-10-12 20:01:24,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:01:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:01:25,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:25,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:25,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:25,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:25,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:25,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:26,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:26,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:26,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:27,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:27,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:27,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:27,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:30,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:01:30,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-12 20:01:30,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 20:01:30,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 20:01:30,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:01:30,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:01:30,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:01:30,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-12 20:01:30,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:01:30,281 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 20:01:30,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:01:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:01:30,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:30,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:01:30,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:01:30,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:01:30,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 20:01:30,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:01:30,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:01:30,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:01:30,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:01:30,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:01:30,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:01:30,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015410383] [2020-10-12 20:01:30,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:01:30,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 20:01:30,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478768581] [2020-10-12 20:01:30,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:01:30,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:01:30,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:01:30,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:01:30,352 INFO L87 Difference]: Start difference. First operand 27946 states and 40105 transitions. Second operand 8 states. [2020-10-12 20:01:30,517 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 143