/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 00:37:19,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 00:37:19,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 00:37:19,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 00:37:19,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 00:37:19,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 00:37:19,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 00:37:19,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 00:37:19,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 00:37:19,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 00:37:19,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 00:37:19,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 00:37:19,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 00:37:19,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 00:37:20,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 00:37:20,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 00:37:20,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 00:37:20,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 00:37:20,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 00:37:20,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 00:37:20,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 00:37:20,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 00:37:20,032 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 00:37:20,033 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 00:37:20,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 00:37:20,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 00:37:20,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 00:37:20,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 00:37:20,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 00:37:20,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 00:37:20,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 00:37:20,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 00:37:20,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 00:37:20,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 00:37:20,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 00:37:20,046 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 00:37:20,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 00:37:20,048 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 00:37:20,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 00:37:20,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 00:37:20,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 00:37:20,052 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 [2020-10-28 00:37:20,079 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 00:37:20,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 00:37:20,081 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 00:37:20,081 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 00:37:20,082 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 00:37:20,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 00:37:20,082 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 00:37:20,083 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 00:37:20,083 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 00:37:20,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 00:37:20,084 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 00:37:20,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 00:37:20,084 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 00:37:20,084 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 00:37:20,085 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 00:37:20,085 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 00:37:20,085 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 00:37:20,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 00:37:20,086 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 00:37:20,086 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 00:37:20,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 00:37:20,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:37:20,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 00:37:20,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 00:37:20,087 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 00:37:20,088 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 00:37:20,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 00:37:20,088 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 00:37:20,088 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 00:37:20,089 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 00:37:20,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 00:37:20,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 00:37:20,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 00:37:20,495 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 00:37:20,496 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 00:37:20,497 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-28 00:37:20,583 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61d7a21ff/cd08b66e8afa4fd5ba489962f14c405b/FLAG5b554e640 [2020-10-28 00:37:21,329 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 00:37:21,332 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-28 00:37:21,348 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61d7a21ff/cd08b66e8afa4fd5ba489962f14c405b/FLAG5b554e640 [2020-10-28 00:37:21,365 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61d7a21ff/cd08b66e8afa4fd5ba489962f14c405b [2020-10-28 00:37:21,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 00:37:21,376 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 00:37:21,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 00:37:21,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 00:37:21,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 00:37:21,385 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:37:21" (1/1) ... [2020-10-28 00:37:21,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3700ee28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:21, skipping insertion in model container [2020-10-28 00:37:21,389 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:37:21" (1/1) ... [2020-10-28 00:37:21,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 00:37:21,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 00:37:22,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:37:22,149 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 00:37:22,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:37:22,504 INFO L208 MainTranslator]: Completed translation [2020-10-28 00:37:22,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:22 WrapperNode [2020-10-28 00:37:22,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 00:37:22,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 00:37:22,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 00:37:22,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 00:37:22,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:22" (1/1) ... [2020-10-28 00:37:22,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:22" (1/1) ... [2020-10-28 00:37:22,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:22" (1/1) ... [2020-10-28 00:37:22,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:22" (1/1) ... [2020-10-28 00:37:22,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:22" (1/1) ... [2020-10-28 00:37:22,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:22" (1/1) ... [2020-10-28 00:37:22,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:22" (1/1) ... [2020-10-28 00:37:22,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 00:37:22,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 00:37:22,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 00:37:22,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 00:37:22,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:22" (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 [2020-10-28 00:37:22,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 00:37:22,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 00:37:22,746 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 00:37:22,746 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 00:37:22,747 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 00:37:22,747 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 00:37:22,747 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 00:37:22,748 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 00:37:22,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 00:37:22,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 00:37:22,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 00:37:22,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 00:37:22,749 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 00:37:22,749 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 00:37:22,749 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 00:37:22,750 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 00:37:22,751 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 00:37:22,751 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 00:37:22,751 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 00:37:22,751 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 00:37:22,751 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 00:37:22,751 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 00:37:22,752 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 00:37:22,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 00:37:22,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 00:37:22,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 00:37:22,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 00:37:22,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 00:37:22,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 00:37:24,240 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 00:37:24,240 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 00:37:24,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:37:24 BoogieIcfgContainer [2020-10-28 00:37:24,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 00:37:24,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 00:37:24,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 00:37:24,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 00:37:24,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:37:21" (1/3) ... [2020-10-28 00:37:24,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4424fef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:37:24, skipping insertion in model container [2020-10-28 00:37:24,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:22" (2/3) ... [2020-10-28 00:37:24,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4424fef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:37:24, skipping insertion in model container [2020-10-28 00:37:24,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:37:24" (3/3) ... [2020-10-28 00:37:24,252 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-28 00:37:24,264 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 00:37:24,269 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 00:37:24,283 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 00:37:24,314 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 00:37:24,314 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 00:37:24,314 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 00:37:24,314 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 00:37:24,314 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 00:37:24,314 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 00:37:24,315 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 00:37:24,315 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 00:37:24,341 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states. [2020-10-28 00:37:24,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-28 00:37:24,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:37:24,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:37:24,361 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:37:24,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:37:24,368 INFO L82 PathProgramCache]: Analyzing trace with hash -59655128, now seen corresponding path program 1 times [2020-10-28 00:37:24,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:37:24,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763881594] [2020-10-28 00:37:24,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:37:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:25,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:25,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:25,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:27,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:27,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:29,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:37:29,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 00:37:29,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 00:37:29,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-28 00:37:29,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:37:29,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 00:37:29,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-28 00:37:29,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 00:37:29,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 00:37:30,693 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:37:30,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:37:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:30,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:30,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:37:30,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:37:30,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:37:30,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 00:37:30,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:37:30,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:37:30,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:37:30,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:37:30,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:37:30,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:37:30,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763881594] [2020-10-28 00:37:30,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:37:30,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 00:37:30,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476048842] [2020-10-28 00:37:30,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 00:37:30,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:37:30,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 00:37:30,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:37:30,835 INFO L87 Difference]: Start difference. First operand 360 states. Second operand 7 states. [2020-10-28 00:37:31,618 WARN L193 SmtUtils]: Spent 669.00 ms on a formula simplification that was a NOOP. DAG size: 297 [2020-10-28 00:37:35,336 WARN L193 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:37:36,039 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 291 [2020-10-28 00:37:36,792 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-28 00:37:37,608 WARN L193 SmtUtils]: Spent 641.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-28 00:37:38,301 WARN L193 SmtUtils]: Spent 647.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-28 00:37:39,041 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:37:39,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:37:39,206 INFO L93 Difference]: Finished difference Result 1628 states and 2760 transitions. [2020-10-28 00:37:39,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 00:37:39,210 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-10-28 00:37:39,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:37:39,243 INFO L225 Difference]: With dead ends: 1628 [2020-10-28 00:37:39,243 INFO L226 Difference]: Without dead ends: 1445 [2020-10-28 00:37:39,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-10-28 00:37:39,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2020-10-28 00:37:39,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 506. [2020-10-28 00:37:39,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506 states. [2020-10-28 00:37:39,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 837 transitions. [2020-10-28 00:37:39,396 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 837 transitions. Word has length 123 [2020-10-28 00:37:39,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:37:39,397 INFO L481 AbstractCegarLoop]: Abstraction has 506 states and 837 transitions. [2020-10-28 00:37:39,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 00:37:39,397 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 837 transitions. [2020-10-28 00:37:39,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-28 00:37:39,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:37:39,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:37:39,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 00:37:39,406 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:37:39,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:37:39,416 INFO L82 PathProgramCache]: Analyzing trace with hash 393440937, now seen corresponding path program 1 times [2020-10-28 00:37:39,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:37:39,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821225828] [2020-10-28 00:37:39,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:37:39,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:39,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:39,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:39,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:40,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:41,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:41,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:44,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:37:44,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 00:37:44,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:37:44,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-28 00:37:44,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:37:44,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 00:37:44,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-28 00:37:44,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 00:37:44,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:37:45,332 WARN L193 SmtUtils]: Spent 612.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:37:45,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:37:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:45,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:45,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:37:45,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:37:45,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:37:45,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 00:37:45,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:37:45,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:37:45,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:37:45,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:37:45,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:37:45,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:37:45,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821225828] [2020-10-28 00:37:45,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:37:45,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 00:37:45,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173046161] [2020-10-28 00:37:45,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 00:37:45,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:37:45,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 00:37:45,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 00:37:45,409 INFO L87 Difference]: Start difference. First operand 506 states and 837 transitions. Second operand 8 states. [2020-10-28 00:37:46,222 WARN L193 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 299 [2020-10-28 00:37:49,319 WARN L193 SmtUtils]: Spent 677.00 ms on a formula simplification that was a NOOP. DAG size: 296 [2020-10-28 00:37:50,009 WARN L193 SmtUtils]: Spent 658.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:37:50,745 WARN L193 SmtUtils]: Spent 643.00 ms on a formula simplification that was a NOOP. DAG size: 291 [2020-10-28 00:37:51,486 WARN L193 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-28 00:37:52,400 WARN L193 SmtUtils]: Spent 776.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-28 00:37:53,139 WARN L193 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 296 [2020-10-28 00:37:53,941 WARN L193 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 294 [2020-10-28 00:37:55,244 WARN L193 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-28 00:37:55,999 WARN L193 SmtUtils]: Spent 649.00 ms on a formula simplification that was a NOOP. DAG size: 296 [2020-10-28 00:37:57,225 WARN L193 SmtUtils]: Spent 654.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-28 00:37:57,896 WARN L193 SmtUtils]: Spent 633.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:37:57,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:37:57,926 INFO L93 Difference]: Finished difference Result 3792 states and 6334 transitions. [2020-10-28 00:37:57,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-28 00:37:57,926 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 124 [2020-10-28 00:37:57,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:37:57,947 INFO L225 Difference]: With dead ends: 3792 [2020-10-28 00:37:57,948 INFO L226 Difference]: Without dead ends: 3483 [2020-10-28 00:37:57,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=257, Invalid=673, Unknown=0, NotChecked=0, Total=930 [2020-10-28 00:37:57,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3483 states. [2020-10-28 00:37:58,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3483 to 1349. [2020-10-28 00:37:58,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1349 states. [2020-10-28 00:37:58,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 2250 transitions. [2020-10-28 00:37:58,081 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 2250 transitions. Word has length 124 [2020-10-28 00:37:58,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:37:58,082 INFO L481 AbstractCegarLoop]: Abstraction has 1349 states and 2250 transitions. [2020-10-28 00:37:58,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 00:37:58,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 2250 transitions. [2020-10-28 00:37:58,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-28 00:37:58,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:37:58,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:37:58,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 00:37:58,089 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:37:58,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:37:58,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1695815777, now seen corresponding path program 1 times [2020-10-28 00:37:58,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:37:58,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50464419] [2020-10-28 00:37:58,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:37:58,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:58,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:58,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:58,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:59,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:59,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:59,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:03,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:38:03,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-28 00:38:03,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:38:03,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-28 00:38:03,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:38:03,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:38:03,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-28 00:38:03,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 00:38:03,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:38:04,014 WARN L193 SmtUtils]: Spent 685.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:38:04,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:38:04,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:38:04,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:04,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:38:04,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:38:04,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:38:04,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 00:38:04,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:38:04,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:38:04,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:38:04,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:38:04,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:38:04,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:38:04,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50464419] [2020-10-28 00:38:04,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:38:04,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:38:04,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666931293] [2020-10-28 00:38:04,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:38:04,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:38:04,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:38:04,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:38:04,100 INFO L87 Difference]: Start difference. First operand 1349 states and 2250 transitions. Second operand 5 states. [2020-10-28 00:38:04,803 WARN L193 SmtUtils]: Spent 642.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:38:07,539 WARN L193 SmtUtils]: Spent 624.00 ms on a formula simplification that was a NOOP. DAG size: 291 [2020-10-28 00:38:07,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:38:07,698 INFO L93 Difference]: Finished difference Result 4509 states and 7550 transitions. [2020-10-28 00:38:07,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 00:38:07,699 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-28 00:38:07,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:38:07,722 INFO L225 Difference]: With dead ends: 4509 [2020-10-28 00:38:07,726 INFO L226 Difference]: Without dead ends: 3472 [2020-10-28 00:38:07,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 00:38:07,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3472 states. [2020-10-28 00:38:07,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3472 to 2425. [2020-10-28 00:38:07,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2425 states. [2020-10-28 00:38:07,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2425 states to 2425 states and 4052 transitions. [2020-10-28 00:38:07,929 INFO L78 Accepts]: Start accepts. Automaton has 2425 states and 4052 transitions. Word has length 125 [2020-10-28 00:38:07,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:38:07,930 INFO L481 AbstractCegarLoop]: Abstraction has 2425 states and 4052 transitions. [2020-10-28 00:38:07,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:38:07,931 INFO L276 IsEmpty]: Start isEmpty. Operand 2425 states and 4052 transitions. [2020-10-28 00:38:07,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-28 00:38:07,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:38:07,941 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:38:07,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 00:38:07,941 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:38:07,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:38:07,942 INFO L82 PathProgramCache]: Analyzing trace with hash -738938430, now seen corresponding path program 1 times [2020-10-28 00:38:07,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:38:07,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220537982] [2020-10-28 00:38:07,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:38:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:38:08,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:08,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:08,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:08,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:08,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:09,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:13,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:38:13,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 00:38:13,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:38:13,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-28 00:38:13,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:38:13,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:38:13,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-28 00:38:13,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 00:38:13,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:38:13,865 WARN L193 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:38:13,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:38:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:38:13,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:13,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:38:13,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:38:13,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:38:13,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 00:38:13,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:38:13,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:38:13,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:38:13,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:38:13,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:38:13,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:38:13,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220537982] [2020-10-28 00:38:13,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:38:13,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:38:13,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147649355] [2020-10-28 00:38:13,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:38:13,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:38:13,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:38:13,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:38:13,938 INFO L87 Difference]: Start difference. First operand 2425 states and 4052 transitions. Second operand 5 states. [2020-10-28 00:38:14,635 WARN L193 SmtUtils]: Spent 635.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:38:17,331 WARN L193 SmtUtils]: Spent 611.00 ms on a formula simplification that was a NOOP. DAG size: 291 [2020-10-28 00:38:17,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:38:17,614 INFO L93 Difference]: Finished difference Result 8647 states and 14478 transitions. [2020-10-28 00:38:17,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 00:38:17,614 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-28 00:38:17,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:38:17,652 INFO L225 Difference]: With dead ends: 8647 [2020-10-28 00:38:17,652 INFO L226 Difference]: Without dead ends: 6583 [2020-10-28 00:38:17,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 00:38:17,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6583 states. [2020-10-28 00:38:18,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6583 to 4502. [2020-10-28 00:38:18,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4502 states. [2020-10-28 00:38:18,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4502 states to 4502 states and 7524 transitions. [2020-10-28 00:38:18,031 INFO L78 Accepts]: Start accepts. Automaton has 4502 states and 7524 transitions. Word has length 126 [2020-10-28 00:38:18,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:38:18,031 INFO L481 AbstractCegarLoop]: Abstraction has 4502 states and 7524 transitions. [2020-10-28 00:38:18,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:38:18,031 INFO L276 IsEmpty]: Start isEmpty. Operand 4502 states and 7524 transitions. [2020-10-28 00:38:18,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-28 00:38:18,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:38:18,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:38:18,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 00:38:18,035 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:38:18,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:38:18,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1234391194, now seen corresponding path program 1 times [2020-10-28 00:38:18,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:38:18,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958253458] [2020-10-28 00:38:18,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:38:18,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:38:18,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:18,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:18,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:18,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:19,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:19,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:23,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:38:23,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-28 00:38:23,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:38:23,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 00:38:23,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:38:23,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:38:23,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-28 00:38:23,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 00:38:23,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:38:23,780 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:38:23,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:38:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:38:23,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:23,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:38:23,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:38:23,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:38:23,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:38:23,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:38:23,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:38:23,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:38:23,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:38:23,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:38:23,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:38:23,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958253458] [2020-10-28 00:38:23,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:38:23,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:38:23,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653759025] [2020-10-28 00:38:23,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:38:23,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:38:23,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:38:23,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:38:23,839 INFO L87 Difference]: Start difference. First operand 4502 states and 7524 transitions. Second operand 5 states. [2020-10-28 00:38:24,548 WARN L193 SmtUtils]: Spent 635.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:38:27,236 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification that was a NOOP. DAG size: 291 [2020-10-28 00:38:27,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:38:27,677 INFO L93 Difference]: Finished difference Result 16835 states and 28158 transitions. [2020-10-28 00:38:27,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 00:38:27,678 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-28 00:38:27,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:38:27,786 INFO L225 Difference]: With dead ends: 16835 [2020-10-28 00:38:27,786 INFO L226 Difference]: Without dead ends: 12724 [2020-10-28 00:38:27,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 00:38:27,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12724 states. [2020-10-28 00:38:28,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12724 to 8582. [2020-10-28 00:38:28,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8582 states. [2020-10-28 00:38:28,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8582 states to 8582 states and 14328 transitions. [2020-10-28 00:38:28,513 INFO L78 Accepts]: Start accepts. Automaton has 8582 states and 14328 transitions. Word has length 127 [2020-10-28 00:38:28,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:38:28,514 INFO L481 AbstractCegarLoop]: Abstraction has 8582 states and 14328 transitions. [2020-10-28 00:38:28,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:38:28,514 INFO L276 IsEmpty]: Start isEmpty. Operand 8582 states and 14328 transitions. [2020-10-28 00:38:28,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-28 00:38:28,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:38:28,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:38:28,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 00:38:28,517 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:38:28,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:38:28,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1873081994, now seen corresponding path program 1 times [2020-10-28 00:38:28,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:38:28,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116136091] [2020-10-28 00:38:28,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:38:28,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:38:28,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:28,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:28,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:28,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:29,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:29,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:33,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:38:33,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-28 00:38:33,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:38:33,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 00:38:33,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:38:33,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:38:33,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-28 00:38:33,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 00:38:33,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:38:34,282 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:38:34,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:38:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:38:34,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:34,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:38:34,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:38:34,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:38:34,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 00:38:34,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:38:34,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:38:34,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:38:34,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:38:34,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:38:34,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:38:34,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116136091] [2020-10-28 00:38:34,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:38:34,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:38:34,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466998817] [2020-10-28 00:38:34,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:38:34,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:38:34,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:38:34,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:38:34,347 INFO L87 Difference]: Start difference. First operand 8582 states and 14328 transitions. Second operand 4 states. [2020-10-28 00:38:37,099 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-28 00:38:38,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:38:38,038 INFO L93 Difference]: Finished difference Result 23375 states and 38904 transitions. [2020-10-28 00:38:38,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:38:38,039 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-10-28 00:38:38,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:38:38,077 INFO L225 Difference]: With dead ends: 23375 [2020-10-28 00:38:38,077 INFO L226 Difference]: Without dead ends: 15184 [2020-10-28 00:38:38,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:38:38,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15184 states. [2020-10-28 00:38:39,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15184 to 15068. [2020-10-28 00:38:39,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15068 states. [2020-10-28 00:38:39,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15068 states to 15068 states and 24899 transitions. [2020-10-28 00:38:39,126 INFO L78 Accepts]: Start accepts. Automaton has 15068 states and 24899 transitions. Word has length 129 [2020-10-28 00:38:39,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:38:39,126 INFO L481 AbstractCegarLoop]: Abstraction has 15068 states and 24899 transitions. [2020-10-28 00:38:39,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:38:39,126 INFO L276 IsEmpty]: Start isEmpty. Operand 15068 states and 24899 transitions. [2020-10-28 00:38:39,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-28 00:38:39,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:38:39,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:38:39,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 00:38:39,131 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:38:39,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:38:39,132 INFO L82 PathProgramCache]: Analyzing trace with hash 837598203, now seen corresponding path program 1 times [2020-10-28 00:38:39,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:38:39,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087491069] [2020-10-28 00:38:39,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:38:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:38:39,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:39,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:39,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:40,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:40,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:40,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:40,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:44,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:38:44,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 00:38:44,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 00:38:44,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 00:38:44,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:38:44,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:38:44,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-28 00:38:44,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 00:38:44,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:38:44,904 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:38:44,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:38:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:38:44,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:44,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:38:44,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:38:44,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:38:44,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 00:38:44,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:38:44,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:38:44,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:38:44,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:38:44,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:38:44,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:38:44,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2087491069] [2020-10-28 00:38:44,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:38:44,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:38:44,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398852107] [2020-10-28 00:38:44,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:38:44,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:38:44,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:38:44,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:38:44,947 INFO L87 Difference]: Start difference. First operand 15068 states and 24899 transitions. Second operand 4 states. [2020-10-28 00:38:45,640 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:38:49,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:38:49,427 INFO L93 Difference]: Finished difference Result 38987 states and 64429 transitions. [2020-10-28 00:38:49,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:38:49,428 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-10-28 00:38:49,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:38:49,485 INFO L225 Difference]: With dead ends: 38987 [2020-10-28 00:38:49,485 INFO L226 Difference]: Without dead ends: 24300 [2020-10-28 00:38:49,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:38:49,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24300 states. [2020-10-28 00:38:50,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24300 to 24297. [2020-10-28 00:38:50,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24297 states. [2020-10-28 00:38:50,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24297 states to 24297 states and 40043 transitions. [2020-10-28 00:38:50,911 INFO L78 Accepts]: Start accepts. Automaton has 24297 states and 40043 transitions. Word has length 130 [2020-10-28 00:38:50,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:38:50,911 INFO L481 AbstractCegarLoop]: Abstraction has 24297 states and 40043 transitions. [2020-10-28 00:38:50,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:38:50,912 INFO L276 IsEmpty]: Start isEmpty. Operand 24297 states and 40043 transitions. [2020-10-28 00:38:50,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-28 00:38:50,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:38:50,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:38:50,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 00:38:50,915 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:38:50,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:38:50,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1401363140, now seen corresponding path program 1 times [2020-10-28 00:38:50,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:38:50,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793059118] [2020-10-28 00:38:50,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:38:50,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:38:50,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:51,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:51,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:51,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:51,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:51,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:51,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:52,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:55,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:38:55,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 00:38:55,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 00:38:55,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 00:38:55,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:38:55,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:38:55,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-28 00:38:55,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 00:38:55,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:38:56,700 WARN L193 SmtUtils]: Spent 643.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:38:56,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:38:56,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:38:56,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:56,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:38:56,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:38:56,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:38:56,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 00:38:56,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:38:56,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:38:56,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:38:56,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:38:56,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:38:56,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:38:56,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793059118] [2020-10-28 00:38:56,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:38:56,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:38:56,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374339937] [2020-10-28 00:38:56,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:38:56,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:38:56,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:38:56,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:38:56,768 INFO L87 Difference]: Start difference. First operand 24297 states and 40043 transitions. Second operand 5 states. [2020-10-28 00:38:59,805 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-28 00:39:02,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:39:02,459 INFO L93 Difference]: Finished difference Result 68607 states and 112847 transitions. [2020-10-28 00:39:02,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:39:02,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-10-28 00:39:02,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:39:02,557 INFO L225 Difference]: With dead ends: 68607 [2020-10-28 00:39:02,557 INFO L226 Difference]: Without dead ends: 44788 [2020-10-28 00:39:02,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:39:02,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44788 states. [2020-10-28 00:39:05,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44788 to 44401. [2020-10-28 00:39:05,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44401 states. [2020-10-28 00:39:05,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44401 states to 44401 states and 72627 transitions. [2020-10-28 00:39:05,106 INFO L78 Accepts]: Start accepts. Automaton has 44401 states and 72627 transitions. Word has length 130 [2020-10-28 00:39:05,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:39:05,106 INFO L481 AbstractCegarLoop]: Abstraction has 44401 states and 72627 transitions. [2020-10-28 00:39:05,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:39:05,106 INFO L276 IsEmpty]: Start isEmpty. Operand 44401 states and 72627 transitions. [2020-10-28 00:39:05,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-28 00:39:05,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:39:05,110 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:39:05,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 00:39:05,111 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:39:05,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:39:05,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1099832599, now seen corresponding path program 1 times [2020-10-28 00:39:05,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:39:05,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542936041] [2020-10-28 00:39:05,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:39:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:39:05,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:05,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:05,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:05,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:05,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:05,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:06,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:10,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:39:10,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 00:39:10,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 00:39:10,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 00:39:10,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:39:10,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:39:10,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-28 00:39:10,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 00:39:10,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:39:11,046 WARN L193 SmtUtils]: Spent 590.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:39:11,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:39:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:39:11,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:11,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:39:11,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:39:11,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:39:11,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:39:11,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:39:11,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:39:11,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:39:11,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:39:11,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:39:11,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:39:11,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542936041] [2020-10-28 00:39:11,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:39:11,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:39:11,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4278096] [2020-10-28 00:39:11,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:39:11,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:39:11,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:39:11,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:39:11,100 INFO L87 Difference]: Start difference. First operand 44401 states and 72627 transitions. Second operand 4 states. [2020-10-28 00:39:11,833 WARN L193 SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:39:18,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:39:18,104 INFO L93 Difference]: Finished difference Result 123631 states and 202219 transitions. [2020-10-28 00:39:18,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:39:18,105 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-10-28 00:39:18,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:39:18,272 INFO L225 Difference]: With dead ends: 123631 [2020-10-28 00:39:18,273 INFO L226 Difference]: Without dead ends: 79608 [2020-10-28 00:39:18,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:39:18,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79608 states. [2020-10-28 00:39:23,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79608 to 79605. [2020-10-28 00:39:23,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79605 states. [2020-10-28 00:39:23,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79605 states to 79605 states and 129815 transitions. [2020-10-28 00:39:23,232 INFO L78 Accepts]: Start accepts. Automaton has 79605 states and 129815 transitions. Word has length 130 [2020-10-28 00:39:23,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:39:23,232 INFO L481 AbstractCegarLoop]: Abstraction has 79605 states and 129815 transitions. [2020-10-28 00:39:23,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:39:23,232 INFO L276 IsEmpty]: Start isEmpty. Operand 79605 states and 129815 transitions. [2020-10-28 00:39:23,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-28 00:39:23,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:39:23,235 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:39:23,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 00:39:23,236 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:39:23,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:39:23,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1891644944, now seen corresponding path program 1 times [2020-10-28 00:39:23,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:39:23,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466636306] [2020-10-28 00:39:23,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:39:23,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:39:23,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:23,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:23,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:23,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:24,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:24,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:25,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:39:25,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 00:39:25,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:39:25,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1930 [2020-10-28 00:39:25,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:39:25,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:39:25,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-28 00:39:25,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 00:39:25,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:39:25,867 WARN L193 SmtUtils]: Spent 612.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:39:25,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:39:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:39:25,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:25,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:39:25,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:39:25,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:39:25,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:39:25,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:39:25,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:39:25,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:39:25,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:39:25,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:39:25,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:39:25,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466636306] [2020-10-28 00:39:25,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:39:25,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:39:25,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145400065] [2020-10-28 00:39:25,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:39:25,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:39:25,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:39:25,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:39:25,933 INFO L87 Difference]: Start difference. First operand 79605 states and 129815 transitions. Second operand 4 states. [2020-10-28 00:39:26,613 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:39:35,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:39:35,035 INFO L93 Difference]: Finished difference Result 194759 states and 316907 transitions. [2020-10-28 00:39:35,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:39:35,036 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-10-28 00:39:35,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:39:35,409 INFO L225 Difference]: With dead ends: 194759 [2020-10-28 00:39:35,409 INFO L226 Difference]: Without dead ends: 115544 [2020-10-28 00:39:35,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:39:35,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115544 states. [2020-10-28 00:39:42,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115544 to 115157. [2020-10-28 00:39:42,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115157 states. [2020-10-28 00:39:42,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115157 states to 115157 states and 186175 transitions. [2020-10-28 00:39:42,521 INFO L78 Accepts]: Start accepts. Automaton has 115157 states and 186175 transitions. Word has length 130 [2020-10-28 00:39:42,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:39:42,522 INFO L481 AbstractCegarLoop]: Abstraction has 115157 states and 186175 transitions. [2020-10-28 00:39:42,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:39:42,522 INFO L276 IsEmpty]: Start isEmpty. Operand 115157 states and 186175 transitions. [2020-10-28 00:39:42,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-28 00:39:42,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:39:42,539 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:39:42,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 00:39:42,540 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:39:42,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:39:42,543 INFO L82 PathProgramCache]: Analyzing trace with hash -146343400, now seen corresponding path program 1 times [2020-10-28 00:39:42,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:39:42,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784381641] [2020-10-28 00:39:42,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:39:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:39:42,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:42,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:42,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:42,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:42,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:43,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:46,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:47,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:47,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:47,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:39:47,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 00:39:47,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 00:39:47,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 00:39:47,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:39:47,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:39:47,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 00:39:47,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 00:39:47,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:39:48,263 WARN L193 SmtUtils]: Spent 600.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:39:48,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:39:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:39:48,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:48,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:39:48,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:39:48,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:39:48,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 00:39:48,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:39:48,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:39:48,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:39:48,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:39:48,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:39:48,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:39:48,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784381641] [2020-10-28 00:39:48,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:39:48,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:39:48,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285547210] [2020-10-28 00:39:48,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:39:48,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:39:48,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:39:48,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:39:48,329 INFO L87 Difference]: Start difference. First operand 115157 states and 186175 transitions. Second operand 4 states. [2020-10-28 00:39:48,984 WARN L193 SmtUtils]: Spent 600.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:40:00,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:40:00,952 INFO L93 Difference]: Finished difference Result 248593 states and 402229 transitions. [2020-10-28 00:40:00,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:40:00,953 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-10-28 00:40:00,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:40:01,232 INFO L225 Difference]: With dead ends: 248593 [2020-10-28 00:40:01,232 INFO L226 Difference]: Without dead ends: 169370 [2020-10-28 00:40:01,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:40:01,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169370 states. [2020-10-28 00:40:10,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169370 to 169367. [2020-10-28 00:40:10,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169367 states. [2020-10-28 00:40:11,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169367 states to 169367 states and 272263 transitions. [2020-10-28 00:40:11,615 INFO L78 Accepts]: Start accepts. Automaton has 169367 states and 272263 transitions. Word has length 131 [2020-10-28 00:40:11,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:40:11,615 INFO L481 AbstractCegarLoop]: Abstraction has 169367 states and 272263 transitions. [2020-10-28 00:40:11,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:40:11,616 INFO L276 IsEmpty]: Start isEmpty. Operand 169367 states and 272263 transitions. [2020-10-28 00:40:11,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-28 00:40:11,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:40:11,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:40:11,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 00:40:11,618 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:40:11,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:40:11,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1791644775, now seen corresponding path program 1 times [2020-10-28 00:40:11,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:40:11,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263610095] [2020-10-28 00:40:11,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:40:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:40:11,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:40:11,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:40:11,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:40:11,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:40:12,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:40:12,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:40:15,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:40:15,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:40:16,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:40:16,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 00:40:16,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 00:40:16,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 00:40:16,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:40:16,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:40:16,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-28 00:40:16,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 00:40:16,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:40:17,331 WARN L193 SmtUtils]: Spent 623.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:40:17,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:40:17,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:40:17,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:40:17,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:40:17,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:40:17,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:40:17,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 00:40:17,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:40:17,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:40:17,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:40:17,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:40:17,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:40:17,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:40:17,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263610095] [2020-10-28 00:40:17,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:40:17,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:40:17,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630839319] [2020-10-28 00:40:17,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:40:17,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:40:17,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:40:17,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:40:17,388 INFO L87 Difference]: Start difference. First operand 169367 states and 272263 transitions. Second operand 4 states. [2020-10-28 00:40:18,083 WARN L193 SmtUtils]: Spent 650.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-28 00:40:31,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:40:31,062 INFO L93 Difference]: Finished difference Result 362105 states and 582224 transitions. [2020-10-28 00:40:31,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:40:31,063 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-10-28 00:40:31,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:40:31,545 INFO L225 Difference]: With dead ends: 362105 [2020-10-28 00:40:31,546 INFO L226 Difference]: Without dead ends: 193156 [2020-10-28 00:40:31,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:40:31,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193156 states. [2020-10-28 00:40:42,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193156 to 192913. [2020-10-28 00:40:42,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192913 states. [2020-10-28 00:40:43,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192913 states to 192913 states and 309908 transitions. [2020-10-28 00:40:43,336 INFO L78 Accepts]: Start accepts. Automaton has 192913 states and 309908 transitions. Word has length 133 [2020-10-28 00:40:43,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:40:43,337 INFO L481 AbstractCegarLoop]: Abstraction has 192913 states and 309908 transitions. [2020-10-28 00:40:43,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:40:43,337 INFO L276 IsEmpty]: Start isEmpty. Operand 192913 states and 309908 transitions. [2020-10-28 00:40:43,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-28 00:40:43,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:40:43,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:40:43,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 00:40:43,339 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:40:43,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:40:43,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1309692303, now seen corresponding path program 1 times [2020-10-28 00:40:43,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:40:43,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884907259] [2020-10-28 00:40:43,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:40:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:40:43,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:40:43,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:40:43,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:40:43,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:40:44,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:40:44,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:40:44,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:40:44,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:40:48,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:40:48,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 00:40:48,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 00:40:48,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 00:40:48,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:40:48,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:40:48,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 00:40:48,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 00:40:48,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:40:49,168 WARN L193 SmtUtils]: Spent 640.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-28 00:40:49,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:40:49,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:40:49,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:40:49,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:40:49,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:40:49,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:40:49,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 00:40:49,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:40:49,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:40:49,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:40:49,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:40:49,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:40:49,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:40:49,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884907259] [2020-10-28 00:40:49,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:40:49,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:40:49,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726315887] [2020-10-28 00:40:49,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:40:49,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:40:49,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:40:49,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:40:49,228 INFO L87 Difference]: Start difference. First operand 192913 states and 309908 transitions. Second operand 4 states. [2020-10-28 00:40:49,951 WARN L193 SmtUtils]: Spent 674.00 ms on a formula simplification that was a NOOP. DAG size: 293