/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_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:52:31,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:52:31,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:52:32,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:52:32,049 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:52:32,056 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:52:32,059 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:52:32,063 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:52:32,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:52:32,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:52:32,074 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:52:32,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:52:32,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:52:32,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:52:32,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:52:32,088 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:52:32,089 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:52:32,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:52:32,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:52:32,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:52:32,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:52:32,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:52:32,111 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:52:32,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:52:32,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:52:32,123 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:52:32,126 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:52:32,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:52:32,128 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:52:32,130 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:52:32,131 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:52:32,132 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:52:32,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:52:32,134 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:52:32,136 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:52:32,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:52:32,137 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:52:32,137 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:52:32,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:52:32,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:52:32,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:52:32,147 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 [2020-10-27 23:52:32,206 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:52:32,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:52:32,211 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:52:32,211 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:52:32,212 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:52:32,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:52:32,212 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:52:32,212 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:52:32,212 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:52:32,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:52:32,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:52:32,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:52:32,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:52:32,214 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:52:32,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:52:32,215 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:52:32,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:52:32,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:52:32,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:52:32,216 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:52:32,216 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:52:32,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:52:32,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:52:32,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:52:32,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:52:32,217 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:52:32,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:52:32,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:52:32,218 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:52:32,218 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:52:32,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:52:32,641 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:52:32,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:52:32,646 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:52:32,647 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:52:32,648 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c [2020-10-27 23:52:32,730 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/074144167/735ad07fb79240a6b9fd9b66a25ddd11/FLAG6d23e6659 [2020-10-27 23:52:33,658 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:52:33,659 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c [2020-10-27 23:52:33,713 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/074144167/735ad07fb79240a6b9fd9b66a25ddd11/FLAG6d23e6659 [2020-10-27 23:52:34,194 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/074144167/735ad07fb79240a6b9fd9b66a25ddd11 [2020-10-27 23:52:34,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:52:34,208 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:52:34,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:52:34,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:52:34,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:52:34,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:52:34" (1/1) ... [2020-10-27 23:52:34,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e7909be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:52:34, skipping insertion in model container [2020-10-27 23:52:34,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:52:34" (1/1) ... [2020-10-27 23:52:34,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:52:34,392 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:52:35,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:52:35,672 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:52:36,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:52:36,298 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:52:36,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:52:36 WrapperNode [2020-10-27 23:52:36,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:52:36,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:52:36,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:52:36,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:52:36,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:52:36" (1/1) ... [2020-10-27 23:52:36,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:52:36" (1/1) ... [2020-10-27 23:52:36,374 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:52:36" (1/1) ... [2020-10-27 23:52:36,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:52:36" (1/1) ... [2020-10-27 23:52:36,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:52:36" (1/1) ... [2020-10-27 23:52:36,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:52:36" (1/1) ... [2020-10-27 23:52:36,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:52:36" (1/1) ... [2020-10-27 23:52:36,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:52:36,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:52:36,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:52:36,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:52:36,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:52:36" (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 [2020-10-27 23:52:36,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:52:36,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:52:36,674 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:52:36,674 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:52:36,674 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:52:36,674 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:52:36,674 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:52:36,674 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:52:36,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:52:36,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:52:36,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:52:36,675 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:52:36,675 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:52:36,675 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:52:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:52:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:52:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:52:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:52:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:52:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 23:52:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-27 23:52:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:52:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:52:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:52:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:52:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:52:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:52:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:52:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:52:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:52:41,433 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:52:41,433 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:52:41,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:52:41 BoogieIcfgContainer [2020-10-27 23:52:41,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:52:41,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:52:41,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:52:41,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:52:41,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:52:34" (1/3) ... [2020-10-27 23:52:41,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f26280d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:52:41, skipping insertion in model container [2020-10-27 23:52:41,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:52:36" (2/3) ... [2020-10-27 23:52:41,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f26280d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:52:41, skipping insertion in model container [2020-10-27 23:52:41,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:52:41" (3/3) ... [2020-10-27 23:52:41,447 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c [2020-10-27 23:52:41,459 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:52:41,466 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:52:41,479 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:52:41,516 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:52:41,516 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:52:41,516 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:52:41,516 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:52:41,517 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:52:41,517 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:52:41,517 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:52:41,517 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:52:41,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states. [2020-10-27 23:52:41,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 23:52:41,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:52:41,585 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] [2020-10-27 23:52:41,586 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:52:41,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:52:41,593 INFO L82 PathProgramCache]: Analyzing trace with hash 2046227063, now seen corresponding path program 1 times [2020-10-27 23:52:41,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:52:41,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545836858] [2020-10-27 23:52:41,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:52:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:52:42,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:42,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:42,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:43,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:43,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:43,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:45,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:45,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:45,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:46,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:46,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:47,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:52:47,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 23:52:47,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:52:47,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 23:52:47,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:52:47,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:52:47,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-27 23:52:47,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 23:52:47,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 23:52:49,176 WARN L193 SmtUtils]: Spent 1.71 s on a formula simplification that was a NOOP. DAG size: 517 [2020-10-27 23:52:49,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:52:49,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:52:49,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:49,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:52:49,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:52:49,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:52:49,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 23:52:49,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:52:49,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:52:49,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:52:49,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:52:49,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 23:52:49,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:52:49,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545836858] [2020-10-27 23:52:49,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:52:49,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:52:49,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50287255] [2020-10-27 23:52:49,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:52:49,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:52:49,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:52:49,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:52:49,398 INFO L87 Difference]: Start difference. First operand 1140 states. Second operand 7 states. [2020-10-27 23:52:51,436 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification that was a NOOP. DAG size: 521 [2020-10-27 23:53:09,261 WARN L193 SmtUtils]: Spent 1.91 s on a formula simplification that was a NOOP. DAG size: 521 [2020-10-27 23:53:11,624 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification that was a NOOP. DAG size: 523 [2020-10-27 23:53:13,986 WARN L193 SmtUtils]: Spent 1.71 s on a formula simplification that was a NOOP. DAG size: 518 [2020-10-27 23:53:15,926 WARN L193 SmtUtils]: Spent 1.78 s on a formula simplification that was a NOOP. DAG size: 519 [2020-10-27 23:53:19,321 WARN L193 SmtUtils]: Spent 1.84 s on a formula simplification that was a NOOP. DAG size: 520 [2020-10-27 23:53:21,199 WARN L193 SmtUtils]: Spent 1.84 s on a formula simplification that was a NOOP. DAG size: 521 [2020-10-27 23:53:23,284 WARN L193 SmtUtils]: Spent 1.75 s on a formula simplification that was a NOOP. DAG size: 522 [2020-10-27 23:53:23,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:53:23,401 INFO L93 Difference]: Finished difference Result 3268 states and 5598 transitions. [2020-10-27 23:53:23,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:53:23,403 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 91 [2020-10-27 23:53:23,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:53:23,452 INFO L225 Difference]: With dead ends: 3268 [2020-10-27 23:53:23,453 INFO L226 Difference]: Without dead ends: 2569 [2020-10-27 23:53:23,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:53:23,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2569 states. [2020-10-27 23:53:23,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2569 to 1750. [2020-10-27 23:53:23,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1750 states. [2020-10-27 23:53:23,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1750 states to 1750 states and 2368 transitions. [2020-10-27 23:53:23,700 INFO L78 Accepts]: Start accepts. Automaton has 1750 states and 2368 transitions. Word has length 91 [2020-10-27 23:53:23,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:53:23,704 INFO L481 AbstractCegarLoop]: Abstraction has 1750 states and 2368 transitions. [2020-10-27 23:53:23,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:53:23,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1750 states and 2368 transitions. [2020-10-27 23:53:23,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-27 23:53:23,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:53:23,720 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] [2020-10-27 23:53:23,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:53:23,720 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:53:23,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:53:23,722 INFO L82 PathProgramCache]: Analyzing trace with hash 415124163, now seen corresponding path program 1 times [2020-10-27 23:53:23,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:53:23,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830268748] [2020-10-27 23:53:23,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:53:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:53:23,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:24,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:24,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:24,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:24,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:24,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:25,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:25,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:27,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:27,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:28,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:53:28,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 23:53:28,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:53:28,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-27 23:53:28,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:53:28,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:53:28,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:53:28,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 23:53:28,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:53:30,809 WARN L193 SmtUtils]: Spent 1.74 s on a formula simplification that was a NOOP. DAG size: 517 [2020-10-27 23:53:30,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:53:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:53:30,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:30,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:53:30,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:53:30,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:53:30,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 23:53:30,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:53:30,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:53:30,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:53:30,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:53:30,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:53:30,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:53:30,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830268748] [2020-10-27 23:53:30,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:53:30,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:53:30,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484828167] [2020-10-27 23:53:30,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:53:30,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:53:30,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:53:30,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:53:30,916 INFO L87 Difference]: Start difference. First operand 1750 states and 2368 transitions. Second operand 7 states. [2020-10-27 23:53:32,901 WARN L193 SmtUtils]: Spent 1.88 s on a formula simplification that was a NOOP. DAG size: 521 [2020-10-27 23:53:42,583 WARN L193 SmtUtils]: Spent 1.83 s on a formula simplification that was a NOOP. DAG size: 523 [2020-10-27 23:53:44,889 WARN L193 SmtUtils]: Spent 1.88 s on a formula simplification that was a NOOP. DAG size: 521 [2020-10-27 23:53:47,155 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification that was a NOOP. DAG size: 518 [2020-10-27 23:53:48,989 WARN L193 SmtUtils]: Spent 1.77 s on a formula simplification that was a NOOP. DAG size: 519 [2020-10-27 23:53:51,906 WARN L193 SmtUtils]: Spent 1.77 s on a formula simplification that was a NOOP. DAG size: 521 [2020-10-27 23:53:53,808 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification that was a NOOP. DAG size: 520 [2020-10-27 23:53:55,995 WARN L193 SmtUtils]: Spent 1.87 s on a formula simplification that was a NOOP. DAG size: 522 [2020-10-27 23:53:56,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:53:56,045 INFO L93 Difference]: Finished difference Result 4495 states and 6333 transitions. [2020-10-27 23:53:56,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:53:56,047 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2020-10-27 23:53:56,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:53:56,066 INFO L225 Difference]: With dead ends: 4495 [2020-10-27 23:53:56,067 INFO L226 Difference]: Without dead ends: 3582 [2020-10-27 23:53:56,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:53:56,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3582 states. [2020-10-27 23:53:56,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3582 to 2155. [2020-10-27 23:53:56,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2155 states. [2020-10-27 23:53:56,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 2977 transitions. [2020-10-27 23:53:56,186 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 2977 transitions. Word has length 92 [2020-10-27 23:53:56,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:53:56,187 INFO L481 AbstractCegarLoop]: Abstraction has 2155 states and 2977 transitions. [2020-10-27 23:53:56,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:53:56,187 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 2977 transitions. [2020-10-27 23:53:56,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-27 23:53:56,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:53:56,193 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] [2020-10-27 23:53:56,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:53:56,193 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:53:56,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:53:56,194 INFO L82 PathProgramCache]: Analyzing trace with hash 956990493, now seen corresponding path program 1 times [2020-10-27 23:53:56,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:53:56,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647014355] [2020-10-27 23:53:56,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:53:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:53:56,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:56,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:56,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:56,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:56,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:56,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:57,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:57,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:59,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:59,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:59,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:01,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:54:01,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 23:54:01,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:54:01,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 23:54:01,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:54:01,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:54:01,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 23:54:01,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 23:54:01,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:54:03,128 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification that was a NOOP. DAG size: 517 [2020-10-27 23:54:03,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:54:03,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:54:03,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:03,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:54:03,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:54:03,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:54:03,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 23:54:03,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:54:03,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:54:03,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:54:03,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:54:03,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:54:03,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:54:03,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647014355] [2020-10-27 23:54:03,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:54:03,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:54:03,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741031831] [2020-10-27 23:54:03,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:54:03,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:54:03,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:54:03,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:54:03,229 INFO L87 Difference]: Start difference. First operand 2155 states and 2977 transitions. Second operand 7 states. [2020-10-27 23:54:05,280 WARN L193 SmtUtils]: Spent 1.91 s on a formula simplification that was a NOOP. DAG size: 521 [2020-10-27 23:54:13,782 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification that was a NOOP. DAG size: 523 [2020-10-27 23:54:16,004 WARN L193 SmtUtils]: Spent 1.84 s on a formula simplification that was a NOOP. DAG size: 521 [2020-10-27 23:54:18,134 WARN L193 SmtUtils]: Spent 1.84 s on a formula simplification that was a NOOP. DAG size: 519 [2020-10-27 23:54:20,053 WARN L193 SmtUtils]: Spent 1.84 s on a formula simplification that was a NOOP. DAG size: 518 [2020-10-27 23:54:23,060 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification that was a NOOP. DAG size: 521 [2020-10-27 23:54:24,926 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification that was a NOOP. DAG size: 520 [2020-10-27 23:54:27,026 WARN L193 SmtUtils]: Spent 1.82 s on a formula simplification that was a NOOP. DAG size: 522 [2020-10-27 23:54:27,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:54:27,112 INFO L93 Difference]: Finished difference Result 6264 states and 8920 transitions. [2020-10-27 23:54:27,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:54:27,113 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2020-10-27 23:54:27,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:54:27,141 INFO L225 Difference]: With dead ends: 6264 [2020-10-27 23:54:27,141 INFO L226 Difference]: Without dead ends: 5429 [2020-10-27 23:54:27,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:54:27,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5429 states. [2020-10-27 23:54:27,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5429 to 3022. [2020-10-27 23:54:27,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3022 states. [2020-10-27 23:54:27,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3022 states to 3022 states and 4254 transitions. [2020-10-27 23:54:27,346 INFO L78 Accepts]: Start accepts. Automaton has 3022 states and 4254 transitions. Word has length 92 [2020-10-27 23:54:27,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:54:27,347 INFO L481 AbstractCegarLoop]: Abstraction has 3022 states and 4254 transitions. [2020-10-27 23:54:27,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:54:27,347 INFO L276 IsEmpty]: Start isEmpty. Operand 3022 states and 4254 transitions. [2020-10-27 23:54:27,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-27 23:54:27,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:54:27,354 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] [2020-10-27 23:54:27,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:54:27,354 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:54:27,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:54:27,355 INFO L82 PathProgramCache]: Analyzing trace with hash -923432843, now seen corresponding path program 1 times [2020-10-27 23:54:27,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:54:27,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683588642] [2020-10-27 23:54:27,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:54:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:54:27,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:27,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:27,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:27,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:28,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:28,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:28,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:29,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:29,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:30,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:30,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:30,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:30,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:32,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:54:32,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 23:54:32,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:54:32,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 23:54:32,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:54:32,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:54:32,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 23:54:32,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 23:54:32,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:54:34,408 WARN L193 SmtUtils]: Spent 1.83 s on a formula simplification that was a NOOP. DAG size: 517 [2020-10-27 23:54:34,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:54:34,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:54:34,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:34,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:54:34,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:54:34,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:54:34,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 23:54:34,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:54:34,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:54:34,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:54:34,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:54:34,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:54:34,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:54:34,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683588642] [2020-10-27 23:54:34,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:54:34,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:54:34,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668526913] [2020-10-27 23:54:34,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:54:34,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:54:34,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:54:34,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:54:34,490 INFO L87 Difference]: Start difference. First operand 3022 states and 4254 transitions. Second operand 7 states. [2020-10-27 23:54:36,496 WARN L193 SmtUtils]: Spent 1.90 s on a formula simplification that was a NOOP. DAG size: 521 [2020-10-27 23:54:45,124 WARN L193 SmtUtils]: Spent 1.91 s on a formula simplification that was a NOOP. DAG size: 523 [2020-10-27 23:54:47,310 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification that was a NOOP. DAG size: 521 [2020-10-27 23:54:49,403 WARN L193 SmtUtils]: Spent 1.77 s on a formula simplification that was a NOOP. DAG size: 519 [2020-10-27 23:54:51,238 WARN L193 SmtUtils]: Spent 1.77 s on a formula simplification that was a NOOP. DAG size: 518 [2020-10-27 23:54:54,322 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification that was a NOOP. DAG size: 521 [2020-10-27 23:54:56,225 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification that was a NOOP. DAG size: 520 [2020-10-27 23:54:58,431 WARN L193 SmtUtils]: Spent 1.85 s on a formula simplification that was a NOOP. DAG size: 522 [2020-10-27 23:54:58,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:54:58,522 INFO L93 Difference]: Finished difference Result 7554 states and 10907 transitions. [2020-10-27 23:54:58,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:54:58,523 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-10-27 23:54:58,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:54:58,550 INFO L225 Difference]: With dead ends: 7554 [2020-10-27 23:54:58,551 INFO L226 Difference]: Without dead ends: 6158 [2020-10-27 23:54:58,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:54:58,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6158 states. [2020-10-27 23:54:58,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6158 to 3687. [2020-10-27 23:54:58,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3687 states. [2020-10-27 23:54:58,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 5236 transitions. [2020-10-27 23:54:58,820 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 5236 transitions. Word has length 93 [2020-10-27 23:54:58,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:54:58,820 INFO L481 AbstractCegarLoop]: Abstraction has 3687 states and 5236 transitions. [2020-10-27 23:54:58,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:54:58,821 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 5236 transitions. [2020-10-27 23:54:58,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-27 23:54:58,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:54:58,828 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] [2020-10-27 23:54:58,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:54:58,828 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:54:58,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:54:58,829 INFO L82 PathProgramCache]: Analyzing trace with hash -378369255, now seen corresponding path program 1 times [2020-10-27 23:54:58,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:54:58,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934190086] [2020-10-27 23:54:58,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:54:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:54:58,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:59,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:59,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:59,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:59,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:00,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:00,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:00,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:01,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:01,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:01,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:03,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:03,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:55:03,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 23:55:03,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:55:03,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 23:55:03,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:55:03,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:55:03,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:55:03,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 23:55:03,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:55:05,824 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification that was a NOOP. DAG size: 517 [2020-10-27 23:55:05,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:55:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:55:05,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:05,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:55:05,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:55:05,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:55:05,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 23:55:05,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:55:05,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:55:05,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:55:05,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:55:05,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:55:05,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:55:05,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934190086] [2020-10-27 23:55:05,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:55:05,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:55:05,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376632137] [2020-10-27 23:55:05,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:55:05,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:55:05,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:55:05,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:55:05,894 INFO L87 Difference]: Start difference. First operand 3687 states and 5236 transitions. Second operand 7 states. [2020-10-27 23:55:07,869 WARN L193 SmtUtils]: Spent 1.88 s on a formula simplification that was a NOOP. DAG size: 521 [2020-10-27 23:55:15,974 WARN L193 SmtUtils]: Spent 1.85 s on a formula simplification that was a NOOP. DAG size: 523 [2020-10-27 23:55:18,116 WARN L193 SmtUtils]: Spent 1.84 s on a formula simplification that was a NOOP. DAG size: 521 [2020-10-27 23:55:20,221 WARN L193 SmtUtils]: Spent 1.82 s on a formula simplification that was a NOOP. DAG size: 518 [2020-10-27 23:55:22,163 WARN L193 SmtUtils]: Spent 1.84 s on a formula simplification that was a NOOP. DAG size: 519 [2020-10-27 23:55:25,265 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification that was a NOOP. DAG size: 521 [2020-10-27 23:55:27,163 WARN L193 SmtUtils]: Spent 1.85 s on a formula simplification that was a NOOP. DAG size: 520 [2020-10-27 23:55:29,353 WARN L193 SmtUtils]: Spent 1.90 s on a formula simplification that was a NOOP. DAG size: 522 [2020-10-27 23:55:29,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:55:29,406 INFO L93 Difference]: Finished difference Result 9616 states and 13860 transitions. [2020-10-27 23:55:29,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:55:29,407 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-10-27 23:55:29,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:55:29,445 INFO L225 Difference]: With dead ends: 9616 [2020-10-27 23:55:29,445 INFO L226 Difference]: Without dead ends: 8419 [2020-10-27 23:55:29,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:55:29,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8419 states. [2020-10-27 23:55:29,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8419 to 4794. [2020-10-27 23:55:29,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4794 states. [2020-10-27 23:55:29,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4794 states to 4794 states and 6857 transitions. [2020-10-27 23:55:29,796 INFO L78 Accepts]: Start accepts. Automaton has 4794 states and 6857 transitions. Word has length 93 [2020-10-27 23:55:29,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:55:29,797 INFO L481 AbstractCegarLoop]: Abstraction has 4794 states and 6857 transitions. [2020-10-27 23:55:29,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:55:29,797 INFO L276 IsEmpty]: Start isEmpty. Operand 4794 states and 6857 transitions. [2020-10-27 23:55:29,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-27 23:55:29,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:55:29,806 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] [2020-10-27 23:55:29,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:55:29,807 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:55:29,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:55:29,807 INFO L82 PathProgramCache]: Analyzing trace with hash 211255507, now seen corresponding path program 1 times [2020-10-27 23:55:29,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:55:29,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909295813] [2020-10-27 23:55:29,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:55:29,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:55:29,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:30,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:30,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:30,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:30,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:31,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:31,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:31,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:31,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:31,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:34,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:34,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:34,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:34,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:55:34,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 23:55:34,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:55:34,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 23:55:34,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:55:34,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:55:34,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 23:55:34,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 23:55:34,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:55:36,882 WARN L193 SmtUtils]: Spent 1.90 s on a formula simplification that was a NOOP. DAG size: 517 [2020-10-27 23:55:36,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:55:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:55:36,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:36,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:55:36,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:55:36,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:55:36,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 23:55:36,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:55:36,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:55:36,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:55:36,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:55:36,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:55:36,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:55:36,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909295813] [2020-10-27 23:55:36,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:55:36,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:55:36,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583801382] [2020-10-27 23:55:36,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:55:36,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:55:36,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:55:36,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:55:36,978 INFO L87 Difference]: Start difference. First operand 4794 states and 6857 transitions. Second operand 7 states. [2020-10-27 23:55:38,897 WARN L193 SmtUtils]: Spent 1.82 s on a formula simplification that was a NOOP. DAG size: 521 [2020-10-27 23:55:49,746 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification that was a NOOP. DAG size: 521 [2020-10-27 23:55:51,946 WARN L193 SmtUtils]: Spent 1.85 s on a formula simplification that was a NOOP. DAG size: 523 [2020-10-27 23:55:54,218 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification that was a NOOP. DAG size: 518 [2020-10-27 23:55:56,193 WARN L193 SmtUtils]: Spent 1.80 s on a formula simplification that was a NOOP. DAG size: 519 [2020-10-27 23:55:59,701 WARN L193 SmtUtils]: Spent 1.84 s on a formula simplification that was a NOOP. DAG size: 520 [2020-10-27 23:56:01,624 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification that was a NOOP. DAG size: 521 [2020-10-27 23:56:03,878 WARN L193 SmtUtils]: Spent 1.85 s on a formula simplification that was a NOOP. DAG size: 522 [2020-10-27 23:56:03,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:56:03,938 INFO L93 Difference]: Finished difference Result 12194 states and 17811 transitions. [2020-10-27 23:56:03,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:56:03,939 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-10-27 23:56:03,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:56:03,966 INFO L225 Difference]: With dead ends: 12194 [2020-10-27 23:56:03,966 INFO L226 Difference]: Without dead ends: 10836 [2020-10-27 23:56:03,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:56:03,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10836 states. [2020-10-27 23:56:04,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10836 to 5499. [2020-10-27 23:56:04,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5499 states. [2020-10-27 23:56:04,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5499 states to 5499 states and 7894 transitions. [2020-10-27 23:56:04,390 INFO L78 Accepts]: Start accepts. Automaton has 5499 states and 7894 transitions. Word has length 93 [2020-10-27 23:56:04,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:56:04,391 INFO L481 AbstractCegarLoop]: Abstraction has 5499 states and 7894 transitions. [2020-10-27 23:56:04,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:56:04,391 INFO L276 IsEmpty]: Start isEmpty. Operand 5499 states and 7894 transitions. [2020-10-27 23:56:04,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 23:56:04,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:56:04,402 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] [2020-10-27 23:56:04,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:56:04,402 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:56:04,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:56:04,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1345194535, now seen corresponding path program 1 times [2020-10-27 23:56:04,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:56:04,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934038814] [2020-10-27 23:56:04,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:56:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:56:04,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:04,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:04,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:04,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:05,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:05,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:06,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:06,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:06,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:08,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:08,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:08,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking...