/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:54:18,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:54:18,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:54:18,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:54:18,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:54:18,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:54:18,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:54:18,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:54:18,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:54:18,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:54:18,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:54:18,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:54:18,569 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:54:18,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:54:18,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:54:18,574 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:54:18,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:54:18,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:54:18,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:54:18,581 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:54:18,583 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:54:18,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:54:18,586 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:54:18,587 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:54:18,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:54:18,614 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:54:18,617 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:54:18,618 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:54:18,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:54:18,620 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:54:18,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:54:18,622 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:54:18,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:54:18,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:54:18,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:54:18,625 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:54:18,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:54:18,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:54:18,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:54:18,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:54:18,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:54:18,630 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 13:54:18,666 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:54:18,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:54:18,669 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:54:18,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:54:18,670 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:54:18,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:54:18,671 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:54:18,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:54:18,671 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:54:18,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:54:18,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:54:18,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:54:18,674 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:54:18,674 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:54:18,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:54:18,675 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:54:18,675 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:54:18,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:54:18,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:54:18,676 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:54:18,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:54:18,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:54:18,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:54:18,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:54:18,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:54:18,678 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:54:18,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:54:18,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:54:18,678 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:54:18,679 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:54:19,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:54:19,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:54:19,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:54:19,280 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:54:19,281 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:54:19,282 INFO L432 ainManager$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.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-29 13:54:19,377 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c9151550/2e567eb6ac804c16b14e4794a9004f1d/FLAG533c6cb39 [2020-10-29 13:54:20,191 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:54:20,193 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-29 13:54:20,213 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c9151550/2e567eb6ac804c16b14e4794a9004f1d/FLAG533c6cb39 [2020-10-29 13:54:20,415 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c9151550/2e567eb6ac804c16b14e4794a9004f1d [2020-10-29 13:54:20,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:54:20,426 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:54:20,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:54:20,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:54:20,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:54:20,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:54:20" (1/1) ... [2020-10-29 13:54:20,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31bb994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:54:20, skipping insertion in model container [2020-10-29 13:54:20,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:54:20" (1/1) ... [2020-10-29 13:54:20,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:54:20,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:54:21,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:54:21,067 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:54:21,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:54:21,265 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:54:21,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:54:21 WrapperNode [2020-10-29 13:54:21,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:54:21,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:54:21,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:54:21,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:54:21,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:54:21" (1/1) ... [2020-10-29 13:54:21,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:54:21" (1/1) ... [2020-10-29 13:54:21,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:54:21" (1/1) ... [2020-10-29 13:54:21,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:54:21" (1/1) ... [2020-10-29 13:54:21,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:54:21" (1/1) ... [2020-10-29 13:54:21,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:54:21" (1/1) ... [2020-10-29 13:54:21,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:54:21" (1/1) ... [2020-10-29 13:54:21,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:54:21,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:54:21,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:54:21,398 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:54:21,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:54:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:54:21,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:54:21,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:54:21,495 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:54:21,495 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:54:21,496 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:54:21,496 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:54:21,496 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:54:21,496 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:54:21,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:54:21,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:54:21,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:54:21,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 13:54:21,497 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:54:21,497 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:54:21,497 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:54:21,497 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:54:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:54:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:54:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:54:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:54:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 13:54:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-29 13:54:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:54:21,499 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:54:21,499 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:54:21,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:54:21,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:54:21,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:54:21,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:54:21,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:54:21,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:54:23,037 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:54:23,038 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:54:23,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:54:23 BoogieIcfgContainer [2020-10-29 13:54:23,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:54:23,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:54:23,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:54:23,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:54:23,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:54:20" (1/3) ... [2020-10-29 13:54:23,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@735de98f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:54:23, skipping insertion in model container [2020-10-29 13:54:23,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:54:21" (2/3) ... [2020-10-29 13:54:23,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@735de98f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:54:23, skipping insertion in model container [2020-10-29 13:54:23,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:54:23" (3/3) ... [2020-10-29 13:54:23,049 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-29 13:54:23,063 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:54:23,069 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:54:23,084 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:54:23,116 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:54:23,116 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:54:23,116 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:54:23,116 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:54:23,116 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:54:23,116 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:54:23,117 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:54:23,117 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:54:23,143 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states. [2020-10-29 13:54:23,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-29 13:54:23,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:54:23,158 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] [2020-10-29 13:54:23,159 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:54:23,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:54:23,165 INFO L82 PathProgramCache]: Analyzing trace with hash 903645214, now seen corresponding path program 1 times [2020-10-29 13:54:23,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:54:23,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643214919] [2020-10-29 13:54:23,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:54:23,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:54:23,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:23,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:24,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:28,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:54:28,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 13:54:28,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:54:28,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 13:54:28,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:54:28,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:54:28,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:54:28,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 13:54:28,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 13:54:28,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 13:54:29,192 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:54:29,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:54:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:54:29,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:29,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:54:29,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:54:29,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:54:29,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 13:54:29,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:54:29,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:54:29,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:54:29,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:54:29,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:54:29,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:54:29,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:54:29,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643214919] [2020-10-29 13:54:29,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:54:29,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:54:29,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693224764] [2020-10-29 13:54:29,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:54:29,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:54:29,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:54:29,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:54:29,336 INFO L87 Difference]: Start difference. First operand 267 states. Second operand 9 states. [2020-10-29 13:54:29,854 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:54:31,756 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-29 13:54:32,159 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 13:54:32,572 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-29 13:54:32,985 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-29 13:54:33,374 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-29 13:54:34,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:54:34,010 INFO L93 Difference]: Finished difference Result 1186 states and 1916 transitions. [2020-10-29 13:54:34,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 13:54:34,012 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 101 [2020-10-29 13:54:34,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:54:34,039 INFO L225 Difference]: With dead ends: 1186 [2020-10-29 13:54:34,039 INFO L226 Difference]: Without dead ends: 1033 [2020-10-29 13:54:34,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2020-10-29 13:54:34,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2020-10-29 13:54:34,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 400. [2020-10-29 13:54:34,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-10-29 13:54:34,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 599 transitions. [2020-10-29 13:54:34,200 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 599 transitions. Word has length 101 [2020-10-29 13:54:34,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:54:34,202 INFO L481 AbstractCegarLoop]: Abstraction has 400 states and 599 transitions. [2020-10-29 13:54:34,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:54:34,202 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 599 transitions. [2020-10-29 13:54:34,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-29 13:54:34,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:54:34,216 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] [2020-10-29 13:54:34,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:54:34,217 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:54:34,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:54:34,220 INFO L82 PathProgramCache]: Analyzing trace with hash 209176018, now seen corresponding path program 1 times [2020-10-29 13:54:34,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:54:34,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223736034] [2020-10-29 13:54:34,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:54:34,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:54:34,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:34,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:35,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:54:35,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 13:54:35,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:54:35,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1670 [2020-10-29 13:54:35,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:54:35,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:54:35,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:54:35,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 13:54:35,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 13:54:35,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:54:36,527 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:54:36,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:54:36,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:54:36,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:36,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:54:36,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:54:36,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:54:36,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 13:54:36,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:54:36,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:54:36,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:54:36,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:54:36,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:54:36,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:54:36,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:54:36,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223736034] [2020-10-29 13:54:36,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:54:36,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:54:36,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898301714] [2020-10-29 13:54:36,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:54:36,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:54:36,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:54:36,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:54:36,666 INFO L87 Difference]: Start difference. First operand 400 states and 599 transitions. Second operand 9 states. [2020-10-29 13:54:38,863 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-29 13:54:39,294 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-29 13:54:39,696 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 13:54:40,109 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:54:40,561 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-29 13:54:40,956 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-29 13:54:42,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:54:42,647 INFO L93 Difference]: Finished difference Result 1983 states and 3081 transitions. [2020-10-29 13:54:42,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 13:54:42,649 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-10-29 13:54:42,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:54:42,659 INFO L225 Difference]: With dead ends: 1983 [2020-10-29 13:54:42,659 INFO L226 Difference]: Without dead ends: 1686 [2020-10-29 13:54:42,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-29 13:54:42,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2020-10-29 13:54:42,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1671. [2020-10-29 13:54:42,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1671 states. [2020-10-29 13:54:42,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 2592 transitions. [2020-10-29 13:54:42,785 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 2592 transitions. Word has length 102 [2020-10-29 13:54:42,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:54:42,785 INFO L481 AbstractCegarLoop]: Abstraction has 1671 states and 2592 transitions. [2020-10-29 13:54:42,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:54:42,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 2592 transitions. [2020-10-29 13:54:42,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 13:54:42,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:54:42,789 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] [2020-10-29 13:54:42,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:54:42,789 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:54:42,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:54:42,790 INFO L82 PathProgramCache]: Analyzing trace with hash -288595739, now seen corresponding path program 1 times [2020-10-29 13:54:42,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:54:42,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296002625] [2020-10-29 13:54:42,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:54:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:54:42,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:43,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:43,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:54:43,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 13:54:43,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:54:43,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 810 [2020-10-29 13:54:43,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:54:43,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:54:43,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:54:43,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:54:43,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 13:54:43,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:54:44,111 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:54:44,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:54:44,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:54:44,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:44,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:54:44,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:54:44,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:54:44,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 13:54:44,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:54:44,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:54:44,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:54:44,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:54:44,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:54:44,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:54:44,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:54:44,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296002625] [2020-10-29 13:54:44,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:54:44,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:54:44,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998953295] [2020-10-29 13:54:44,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:54:44,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:54:44,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:54:44,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:54:44,206 INFO L87 Difference]: Start difference. First operand 1671 states and 2592 transitions. Second operand 6 states. [2020-10-29 13:54:44,620 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:54:45,976 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-29 13:54:46,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:54:46,717 INFO L93 Difference]: Finished difference Result 4586 states and 7184 transitions. [2020-10-29 13:54:46,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:54:46,718 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-29 13:54:46,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:54:46,734 INFO L225 Difference]: With dead ends: 4586 [2020-10-29 13:54:46,734 INFO L226 Difference]: Without dead ends: 2986 [2020-10-29 13:54:46,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:54:46,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2020-10-29 13:54:46,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 2983. [2020-10-29 13:54:46,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2983 states. [2020-10-29 13:54:46,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2983 states to 2983 states and 4649 transitions. [2020-10-29 13:54:46,947 INFO L78 Accepts]: Start accepts. Automaton has 2983 states and 4649 transitions. Word has length 103 [2020-10-29 13:54:46,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:54:46,955 INFO L481 AbstractCegarLoop]: Abstraction has 2983 states and 4649 transitions. [2020-10-29 13:54:46,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:54:46,955 INFO L276 IsEmpty]: Start isEmpty. Operand 2983 states and 4649 transitions. [2020-10-29 13:54:46,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 13:54:46,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:54:46,965 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] [2020-10-29 13:54:46,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:54:46,966 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:54:46,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:54:46,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1663201078, now seen corresponding path program 1 times [2020-10-29 13:54:46,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:54:46,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485176485] [2020-10-29 13:54:46,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:54:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:54:47,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:47,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:47,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:54:47,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 13:54:47,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:54:47,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 800 [2020-10-29 13:54:47,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:54:47,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:54:47,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:54:47,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:54:47,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 13:54:47,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:54:48,221 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:54:48,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:54:48,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:54:48,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:48,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:54:48,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:54:48,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:54:48,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 13:54:48,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:54:48,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:54:48,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:54:48,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:54:48,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:54:48,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:54:48,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:54:48,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485176485] [2020-10-29 13:54:48,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:54:48,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:54:48,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308415281] [2020-10-29 13:54:48,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:54:48,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:54:48,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:54:48,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:54:48,314 INFO L87 Difference]: Start difference. First operand 2983 states and 4649 transitions. Second operand 6 states. [2020-10-29 13:54:48,714 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:54:50,053 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-29 13:54:51,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:54:51,029 INFO L93 Difference]: Finished difference Result 8355 states and 13088 transitions. [2020-10-29 13:54:51,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:54:51,030 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-29 13:54:51,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:54:51,061 INFO L225 Difference]: With dead ends: 8355 [2020-10-29 13:54:51,062 INFO L226 Difference]: Without dead ends: 5466 [2020-10-29 13:54:51,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:54:51,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5466 states. [2020-10-29 13:54:51,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5466 to 5463. [2020-10-29 13:54:51,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5463 states. [2020-10-29 13:54:51,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5463 states to 5463 states and 8509 transitions. [2020-10-29 13:54:51,459 INFO L78 Accepts]: Start accepts. Automaton has 5463 states and 8509 transitions. Word has length 103 [2020-10-29 13:54:51,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:54:51,460 INFO L481 AbstractCegarLoop]: Abstraction has 5463 states and 8509 transitions. [2020-10-29 13:54:51,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:54:51,460 INFO L276 IsEmpty]: Start isEmpty. Operand 5463 states and 8509 transitions. [2020-10-29 13:54:51,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 13:54:51,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:54:51,465 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] [2020-10-29 13:54:51,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:54:51,466 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:54:51,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:54:51,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1376182825, now seen corresponding path program 1 times [2020-10-29 13:54:51,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:54:51,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415246387] [2020-10-29 13:54:51,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:54:51,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:54:51,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:51,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:52,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:54:52,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 13:54:52,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:54:52,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 780 [2020-10-29 13:54:52,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:54:52,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:54:52,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:54:52,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:54:52,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 13:54:52,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:54:52,764 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:54:52,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:54:52,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:54:52,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:52,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:54:52,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:54:52,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:54:52,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 13:54:52,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:54:52,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:54:52,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:54:52,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:54:52,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:54:52,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:54:52,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:54:52,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415246387] [2020-10-29 13:54:52,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:54:52,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:54:52,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268683432] [2020-10-29 13:54:52,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:54:52,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:54:52,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:54:52,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:54:52,847 INFO L87 Difference]: Start difference. First operand 5463 states and 8509 transitions. Second operand 6 states. [2020-10-29 13:54:53,252 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-29 13:54:54,610 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 13:54:55,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:54:55,699 INFO L93 Difference]: Finished difference Result 15163 states and 23715 transitions. [2020-10-29 13:54:55,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:54:55,700 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-29 13:54:55,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:54:55,751 INFO L225 Difference]: With dead ends: 15163 [2020-10-29 13:54:55,752 INFO L226 Difference]: Without dead ends: 9902 [2020-10-29 13:54:55,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:54:55,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9902 states. [2020-10-29 13:54:56,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9902 to 9899. [2020-10-29 13:54:56,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9899 states. [2020-10-29 13:54:56,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9899 states to 9899 states and 15411 transitions. [2020-10-29 13:54:56,547 INFO L78 Accepts]: Start accepts. Automaton has 9899 states and 15411 transitions. Word has length 103 [2020-10-29 13:54:56,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:54:56,547 INFO L481 AbstractCegarLoop]: Abstraction has 9899 states and 15411 transitions. [2020-10-29 13:54:56,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:54:56,547 INFO L276 IsEmpty]: Start isEmpty. Operand 9899 states and 15411 transitions. [2020-10-29 13:54:56,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 13:54:56,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:54:56,553 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] [2020-10-29 13:54:56,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:54:56,554 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:54:56,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:54:56,554 INFO L82 PathProgramCache]: Analyzing trace with hash -2138050600, now seen corresponding path program 1 times [2020-10-29 13:54:56,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:54:56,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518120753] [2020-10-29 13:54:56,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:54:56,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:54:56,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:56,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:57,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:54:57,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 13:54:57,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:54:57,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 733 [2020-10-29 13:54:57,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:54:57,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:54:57,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:54:57,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:54:57,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 13:54:57,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:54:57,862 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:54:57,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:54:57,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:54:57,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:57,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:54:57,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:54:57,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:54:57,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 13:54:57,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:54:57,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:54:57,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:54:57,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:54:57,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:54:57,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:54:57,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:54:57,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518120753] [2020-10-29 13:54:57,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:54:57,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:54:57,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241387804] [2020-10-29 13:54:57,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:54:57,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:54:57,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:54:57,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:54:57,955 INFO L87 Difference]: Start difference. First operand 9899 states and 15411 transitions. Second operand 6 states. [2020-10-29 13:54:58,362 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:54:59,777 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-29 13:55:01,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:55:01,287 INFO L93 Difference]: Finished difference Result 28496 states and 44404 transitions. [2020-10-29 13:55:01,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:55:01,288 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-29 13:55:01,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:55:01,360 INFO L225 Difference]: With dead ends: 28496 [2020-10-29 13:55:01,360 INFO L226 Difference]: Without dead ends: 18758 [2020-10-29 13:55:01,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:55:01,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18758 states. [2020-10-29 13:55:02,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18758 to 18755. [2020-10-29 13:55:02,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18755 states. [2020-10-29 13:55:02,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18755 states to 18755 states and 29077 transitions. [2020-10-29 13:55:02,969 INFO L78 Accepts]: Start accepts. Automaton has 18755 states and 29077 transitions. Word has length 103 [2020-10-29 13:55:02,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:55:02,969 INFO L481 AbstractCegarLoop]: Abstraction has 18755 states and 29077 transitions. [2020-10-29 13:55:02,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:55:02,969 INFO L276 IsEmpty]: Start isEmpty. Operand 18755 states and 29077 transitions. [2020-10-29 13:55:02,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 13:55:02,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:55:02,978 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] [2020-10-29 13:55:02,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:55:02,978 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:55:02,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:55:02,979 INFO L82 PathProgramCache]: Analyzing trace with hash 734595463, now seen corresponding path program 1 times [2020-10-29 13:55:02,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:55:02,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953946339] [2020-10-29 13:55:02,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:55:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:55:03,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:03,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:03,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:55:03,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 13:55:03,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:55:03,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 841 [2020-10-29 13:55:03,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:55:03,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:55:03,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:55:03,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:55:03,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 13:55:03,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:55:04,344 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:55:04,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:55:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:55:04,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:04,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:55:04,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:55:04,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:55:04,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 13:55:04,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:55:04,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:55:04,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:55:04,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:55:04,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:55:04,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:55:04,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:55:04,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953946339] [2020-10-29 13:55:04,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:55:04,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:55:04,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011152794] [2020-10-29 13:55:04,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:55:04,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:55:04,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:55:04,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:55:04,466 INFO L87 Difference]: Start difference. First operand 18755 states and 29077 transitions. Second operand 6 states. [2020-10-29 13:55:04,881 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:55:06,357 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-29 13:55:08,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:55:08,722 INFO L93 Difference]: Finished difference Result 55181 states and 85525 transitions. [2020-10-29 13:55:08,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:55:08,723 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-29 13:55:08,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:55:08,800 INFO L225 Difference]: With dead ends: 55181 [2020-10-29 13:55:08,800 INFO L226 Difference]: Without dead ends: 36550 [2020-10-29 13:55:08,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:55:08,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36550 states. [2020-10-29 13:55:11,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36550 to 36547. [2020-10-29 13:55:11,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36547 states. [2020-10-29 13:55:11,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36547 states to 36547 states and 56336 transitions. [2020-10-29 13:55:11,190 INFO L78 Accepts]: Start accepts. Automaton has 36547 states and 56336 transitions. Word has length 103 [2020-10-29 13:55:11,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:55:11,190 INFO L481 AbstractCegarLoop]: Abstraction has 36547 states and 56336 transitions. [2020-10-29 13:55:11,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:55:11,190 INFO L276 IsEmpty]: Start isEmpty. Operand 36547 states and 56336 transitions. [2020-10-29 13:55:11,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 13:55:11,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:55:11,206 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] [2020-10-29 13:55:11,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:55:11,206 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:55:11,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:55:11,207 INFO L82 PathProgramCache]: Analyzing trace with hash 2142707348, now seen corresponding path program 1 times [2020-10-29 13:55:11,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:55:11,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718492656] [2020-10-29 13:55:11,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:55:11,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:55:11,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:11,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:12,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:55:12,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 13:55:12,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:55:12,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 751 [2020-10-29 13:55:12,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:55:12,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:55:12,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:55:12,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:55:12,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 13:55:12,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:55:12,450 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:55:12,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:55:12,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:55:12,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:12,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:55:12,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:55:12,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:55:12,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 13:55:12,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:55:12,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:55:12,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:55:12,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:55:12,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:55:12,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:55:12,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:55:12,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718492656] [2020-10-29 13:55:12,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:55:12,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:55:12,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231496397] [2020-10-29 13:55:12,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:55:12,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:55:12,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:55:12,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:55:12,559 INFO L87 Difference]: Start difference. First operand 36547 states and 56336 transitions. Second operand 6 states. [2020-10-29 13:55:12,994 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:55:14,874 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-29 13:55:19,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:55:19,343 INFO L93 Difference]: Finished difference Result 108394 states and 166879 transitions. [2020-10-29 13:55:19,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:55:19,343 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-29 13:55:19,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:55:19,524 INFO L225 Difference]: With dead ends: 108394 [2020-10-29 13:55:19,524 INFO L226 Difference]: Without dead ends: 71902 [2020-10-29 13:55:19,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:55:19,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71902 states. [2020-10-29 13:55:24,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71902 to 71899. [2020-10-29 13:55:24,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71899 states. [2020-10-29 13:55:24,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71899 states to 71899 states and 109894 transitions. [2020-10-29 13:55:24,802 INFO L78 Accepts]: Start accepts. Automaton has 71899 states and 109894 transitions. Word has length 103 [2020-10-29 13:55:24,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:55:24,803 INFO L481 AbstractCegarLoop]: Abstraction has 71899 states and 109894 transitions. [2020-10-29 13:55:24,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:55:24,803 INFO L276 IsEmpty]: Start isEmpty. Operand 71899 states and 109894 transitions. [2020-10-29 13:55:24,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-29 13:55:24,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:55:24,827 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] [2020-10-29 13:55:24,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:55:24,828 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:55:24,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:55:24,828 INFO L82 PathProgramCache]: Analyzing trace with hash 133498589, now seen corresponding path program 1 times [2020-10-29 13:55:24,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:55:24,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752315714] [2020-10-29 13:55:24,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:55:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:55:24,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:24,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:25,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:28,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:55:28,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 13:55:28,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:55:28,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4064 [2020-10-29 13:55:28,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:55:28,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:55:28,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:55:28,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:55:28,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 13:55:28,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:55:29,532 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:55:29,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:55:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:55:29,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:29,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:55:29,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:55:29,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:55:29,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 13:55:29,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:55:29,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:55:29,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:55:29,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:55:29,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:55:29,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 13:55:29,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:55:29,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752315714] [2020-10-29 13:55:29,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:55:29,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:55:29,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718258136] [2020-10-29 13:55:29,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:55:29,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:55:29,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:55:29,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:55:29,620 INFO L87 Difference]: Start difference. First operand 71899 states and 109894 transitions. Second operand 9 states. [2020-10-29 13:55:30,125 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:55:33,793 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 13:55:34,290 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-29 13:55:59,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:55:59,759 INFO L93 Difference]: Finished difference Result 436377 states and 665577 transitions. [2020-10-29 13:55:59,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 13:55:59,760 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 104 [2020-10-29 13:55:59,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:56:00,957 INFO L225 Difference]: With dead ends: 436377 [2020-10-29 13:56:00,957 INFO L226 Difference]: Without dead ends: 375852 [2020-10-29 13:56:01,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2020-10-29 13:56:01,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375852 states. [2020-10-29 13:56:11,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375852 to 72180. [2020-10-29 13:56:11,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72180 states. [2020-10-29 13:56:12,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72180 states to 72180 states and 110259 transitions. [2020-10-29 13:56:12,082 INFO L78 Accepts]: Start accepts. Automaton has 72180 states and 110259 transitions. Word has length 104 [2020-10-29 13:56:12,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:56:12,083 INFO L481 AbstractCegarLoop]: Abstraction has 72180 states and 110259 transitions. [2020-10-29 13:56:12,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:56:12,083 INFO L276 IsEmpty]: Start isEmpty. Operand 72180 states and 110259 transitions. [2020-10-29 13:56:12,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-29 13:56:12,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:56:12,104 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] [2020-10-29 13:56:12,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:56:12,104 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:56:12,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:56:12,105 INFO L82 PathProgramCache]: Analyzing trace with hash 724491901, now seen corresponding path program 1 times [2020-10-29 13:56:12,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:56:12,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782597887] [2020-10-29 13:56:12,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:56:12,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:56:12,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:12,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:12,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:15,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:56:15,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 13:56:15,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:56:15,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2926 [2020-10-29 13:56:15,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:56:15,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:56:15,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:56:15,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:56:15,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 13:56:15,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:56:15,417 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 24 [2020-10-29 13:56:15,936 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:56:15,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:56:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:56:15,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:15,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:56:15,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:56:15,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:56:15,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 13:56:15,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:56:15,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:56:15,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:56:15,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:56:15,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:56:15,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:56:16,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:56:16,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782597887] [2020-10-29 13:56:16,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:56:16,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:56:16,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628264570] [2020-10-29 13:56:16,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:56:16,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:56:16,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:56:16,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:56:16,019 INFO L87 Difference]: Start difference. First operand 72180 states and 110259 transitions. Second operand 9 states. [2020-10-29 13:56:16,515 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:56:20,777 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 13:56:21,507 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-29 13:56:58,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:56:58,385 INFO L93 Difference]: Finished difference Result 409424 states and 624442 transitions. [2020-10-29 13:56:58,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 13:56:58,386 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 104 [2020-10-29 13:56:58,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:56:59,288 INFO L225 Difference]: With dead ends: 409424 [2020-10-29 13:56:59,288 INFO L226 Difference]: Without dead ends: 359719 [2020-10-29 13:56:59,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2020-10-29 13:56:59,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359719 states. [2020-10-29 13:57:10,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359719 to 72806. [2020-10-29 13:57:10,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72806 states. [2020-10-29 13:57:10,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72806 states to 72806 states and 111095 transitions. [2020-10-29 13:57:10,846 INFO L78 Accepts]: Start accepts. Automaton has 72806 states and 111095 transitions. Word has length 104 [2020-10-29 13:57:10,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:57:10,847 INFO L481 AbstractCegarLoop]: Abstraction has 72806 states and 111095 transitions. [2020-10-29 13:57:10,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:57:10,847 INFO L276 IsEmpty]: Start isEmpty. Operand 72806 states and 111095 transitions. [2020-10-29 13:57:10,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-29 13:57:10,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:57:10,871 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] [2020-10-29 13:57:10,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:57:10,872 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:57:10,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:57:10,872 INFO L82 PathProgramCache]: Analyzing trace with hash -847911587, now seen corresponding path program 1 times [2020-10-29 13:57:10,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:57:10,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015647358] [2020-10-29 13:57:10,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:57:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:57:10,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:11,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:11,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:14,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:57:14,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 13:57:14,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:57:14,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3609 [2020-10-29 13:57:14,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:57:14,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:57:14,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:57:14,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:57:14,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 13:57:14,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:57:14,750 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 25 [2020-10-29 13:57:15,135 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:57:15,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:57:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:57:15,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:15,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:57:15,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:57:15,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:57:15,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:57:15,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:57:15,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:57:15,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:57:15,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:57:15,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:57:15,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 13:57:15,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:57:15,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015647358] [2020-10-29 13:57:15,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:57:15,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:57:15,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947227995] [2020-10-29 13:57:15,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:57:15,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:57:15,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:57:15,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:57:15,219 INFO L87 Difference]: Start difference. First operand 72806 states and 111095 transitions. Second operand 9 states. [2020-10-29 13:57:15,639 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:57:19,889 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 13:57:20,566 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 207