/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:51:21,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:51:21,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:51:21,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:51:21,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:51:21,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:51:21,089 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:51:21,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:51:21,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:51:21,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:51:21,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:51:21,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:51:21,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:51:21,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:51:21,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:51:21,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:51:21,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:51:21,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:51:21,109 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:51:21,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:51:21,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:51:21,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:51:21,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:51:21,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:51:21,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:51:21,127 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:51:21,127 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:51:21,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:51:21,129 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:51:21,130 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:51:21,131 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:51:21,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:51:21,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:51:21,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:51:21,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:51:21,135 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:51:21,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:51:21,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:51:21,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:51:21,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:51:21,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:51:21,146 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 13:51:21,178 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:51:21,178 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:51:21,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:51:21,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:51:21,180 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:51:21,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:51:21,183 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:51:21,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:51:21,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:51:21,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:51:21,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:51:21,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:51:21,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:51:21,184 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:51:21,184 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:51:21,185 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:51:21,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:51:21,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:51:21,185 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:51:21,185 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:51:21,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:51:21,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:51:21,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:51:21,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:51:21,186 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:51:21,186 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:51:21,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:51:21,187 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:51:21,187 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:51:21,187 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:51:21,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:51:21,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:51:21,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:51:21,578 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:51:21,579 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:51:21,580 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 13:51:21,662 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bdb8dcd1e/d56fa08e30ad4d369c11e61692e42937/FLAG39fa47143 [2020-10-29 13:51:22,612 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:51:22,613 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 13:51:22,656 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bdb8dcd1e/d56fa08e30ad4d369c11e61692e42937/FLAG39fa47143 [2020-10-29 13:51:23,135 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bdb8dcd1e/d56fa08e30ad4d369c11e61692e42937 [2020-10-29 13:51:23,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:51:23,147 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:51:23,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:51:23,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:51:23,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:51:23,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:51:23" (1/1) ... [2020-10-29 13:51:23,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7997b44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:51:23, skipping insertion in model container [2020-10-29 13:51:23,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:51:23" (1/1) ... [2020-10-29 13:51:23,166 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:51:23,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:51:24,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:51:24,729 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:51:25,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:51:25,349 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:51:25,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:51:25 WrapperNode [2020-10-29 13:51:25,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:51:25,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:51:25,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:51:25,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:51:25,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:51:25" (1/1) ... [2020-10-29 13:51:25,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:51:25" (1/1) ... [2020-10-29 13:51:25,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:51:25" (1/1) ... [2020-10-29 13:51:25,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:51:25" (1/1) ... [2020-10-29 13:51:25,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:51:25" (1/1) ... [2020-10-29 13:51:25,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:51:25" (1/1) ... [2020-10-29 13:51:25,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:51:25" (1/1) ... [2020-10-29 13:51:25,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:51:25,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:51:25,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:51:25,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:51:25,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:51:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:51:25,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:51:25,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:51:25,749 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:51:25,749 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:51:25,749 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:51:25,750 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:51:25,750 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:51:25,750 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:51:25,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:51:25,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:51:25,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:51:25,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 13:51:25,752 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:51:25,752 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:51:25,752 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:51:25,753 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:51:25,753 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:51:25,753 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:51:25,753 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:51:25,753 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:51:25,754 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 13:51:25,754 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:51:25,754 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:51:25,754 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:51:25,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:51:25,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:51:25,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:51:25,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:51:25,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:51:25,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:51:32,024 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:51:32,025 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:51:32,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:51:32 BoogieIcfgContainer [2020-10-29 13:51:32,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:51:32,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:51:32,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:51:32,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:51:32,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:51:23" (1/3) ... [2020-10-29 13:51:32,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f62d4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:51:32, skipping insertion in model container [2020-10-29 13:51:32,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:51:25" (2/3) ... [2020-10-29 13:51:32,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f62d4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:51:32, skipping insertion in model container [2020-10-29 13:51:32,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:51:32" (3/3) ... [2020-10-29 13:51:32,040 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 13:51:32,053 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:51:32,061 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:51:32,077 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:51:32,129 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:51:32,129 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:51:32,129 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:51:32,129 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:51:32,130 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:51:32,130 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:51:32,130 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:51:32,130 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:51:32,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states. [2020-10-29 13:51:32,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 13:51:32,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:51:32,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:51:32,235 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:51:32,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:51:32,242 INFO L82 PathProgramCache]: Analyzing trace with hash -634912560, now seen corresponding path program 1 times [2020-10-29 13:51:32,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:51:32,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94218266] [2020-10-29 13:51:32,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:51:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:51:32,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:33,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:33,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:34,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:34,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:35,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:37,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:51:37,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 13:51:37,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:51:37,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-29 13:51:37,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:51:37,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:51:37,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:51:37,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:51:37,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 13:51:37,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 13:51:41,603 WARN L193 SmtUtils]: Spent 3.35 s on a formula simplification that was a NOOP. DAG size: 649 [2020-10-29 13:51:41,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:51:41,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:51:41,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:41,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:51:41,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:51:41,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:51:41,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-29 13:51:41,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:51:41,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:51:41,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:51:41,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:51:41,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:51:41,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:51:41,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:51:41,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94218266] [2020-10-29 13:51:41,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:51:41,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:51:41,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597268596] [2020-10-29 13:51:41,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:51:41,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:51:41,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:51:41,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:51:41,872 INFO L87 Difference]: Start difference. First operand 1760 states. Second operand 6 states. [2020-10-29 13:51:44,811 WARN L193 SmtUtils]: Spent 2.79 s on a formula simplification that was a NOOP. DAG size: 657 [2020-10-29 13:52:04,187 WARN L193 SmtUtils]: Spent 2.84 s on a formula simplification that was a NOOP. DAG size: 655 [2020-10-29 13:52:05,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:52:05,356 INFO L93 Difference]: Finished difference Result 2605 states and 4592 transitions. [2020-10-29 13:52:05,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:52:05,363 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-10-29 13:52:05,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:52:05,394 INFO L225 Difference]: With dead ends: 2605 [2020-10-29 13:52:05,394 INFO L226 Difference]: Without dead ends: 1651 [2020-10-29 13:52:05,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:52:05,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2020-10-29 13:52:05,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1644. [2020-10-29 13:52:05,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1644 states. [2020-10-29 13:52:05,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1644 states to 1644 states and 2200 transitions. [2020-10-29 13:52:05,571 INFO L78 Accepts]: Start accepts. Automaton has 1644 states and 2200 transitions. Word has length 80 [2020-10-29 13:52:05,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:52:05,572 INFO L481 AbstractCegarLoop]: Abstraction has 1644 states and 2200 transitions. [2020-10-29 13:52:05,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:52:05,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1644 states and 2200 transitions. [2020-10-29 13:52:05,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 13:52:05,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:52:05,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:52:05,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:52:05,584 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:52:05,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:52:05,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1192290487, now seen corresponding path program 1 times [2020-10-29 13:52:05,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:52:05,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411349104] [2020-10-29 13:52:05,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:52:05,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:05,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:05,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:06,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:06,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:06,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:07,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:07,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:08,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:10,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:10,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:10,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 13:52:10,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:52:10,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 13:52:10,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:10,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:10,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:52:10,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 13:52:10,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 13:52:10,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:52:13,510 WARN L193 SmtUtils]: Spent 2.65 s on a formula simplification that was a NOOP. DAG size: 649 [2020-10-29 13:52:13,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:52:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:13,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:13,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:13,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:52:13,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:52:13,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 13:52:13,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:13,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:13,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:52:13,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:52:13,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:52:13,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:52:13,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:52:13,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411349104] [2020-10-29 13:52:13,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:52:13,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:52:13,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056428290] [2020-10-29 13:52:13,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:52:13,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:52:13,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:52:13,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:52:13,627 INFO L87 Difference]: Start difference. First operand 1644 states and 2200 transitions. Second operand 6 states. [2020-10-29 13:52:16,342 WARN L193 SmtUtils]: Spent 2.59 s on a formula simplification that was a NOOP. DAG size: 650 [2020-10-29 13:52:31,381 WARN L193 SmtUtils]: Spent 2.65 s on a formula simplification that was a NOOP. DAG size: 651 [2020-10-29 13:52:34,252 WARN L193 SmtUtils]: Spent 2.57 s on a formula simplification that was a NOOP. DAG size: 650 [2020-10-29 13:52:37,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:52:37,651 INFO L93 Difference]: Finished difference Result 4909 states and 6992 transitions. [2020-10-29 13:52:37,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 13:52:37,652 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-10-29 13:52:37,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:52:37,672 INFO L225 Difference]: With dead ends: 4909 [2020-10-29 13:52:37,673 INFO L226 Difference]: Without dead ends: 3693 [2020-10-29 13:52:37,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-29 13:52:37,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3693 states. [2020-10-29 13:52:37,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3693 to 2791. [2020-10-29 13:52:37,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2791 states. [2020-10-29 13:52:37,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 3933 transitions. [2020-10-29 13:52:37,821 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 3933 transitions. Word has length 80 [2020-10-29 13:52:37,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:52:37,821 INFO L481 AbstractCegarLoop]: Abstraction has 2791 states and 3933 transitions. [2020-10-29 13:52:37,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:52:37,821 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 3933 transitions. [2020-10-29 13:52:37,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 13:52:37,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:52:37,828 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] [2020-10-29 13:52:37,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:52:37,828 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:52:37,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:52:37,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1885023108, now seen corresponding path program 1 times [2020-10-29 13:52:37,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:52:37,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674683005] [2020-10-29 13:52:37,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:52:37,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:37,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:38,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:38,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:38,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:39,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:39,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:40,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:40,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:41,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:42,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:42,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 13:52:42,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:52:42,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 13:52:42,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:42,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:42,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:52:42,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:52:42,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 13:52:42,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:52:46,054 WARN L193 SmtUtils]: Spent 2.81 s on a formula simplification that was a NOOP. DAG size: 649 [2020-10-29 13:52:46,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:52:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:46,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:46,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:46,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:52:46,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:52:46,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 13:52:46,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:46,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:46,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:52:46,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:52:46,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:52:46,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:52:46,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:52:46,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674683005] [2020-10-29 13:52:46,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:52:46,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:52:46,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563306489] [2020-10-29 13:52:46,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:52:46,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:52:46,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:52:46,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:52:46,239 INFO L87 Difference]: Start difference. First operand 2791 states and 3933 transitions. Second operand 9 states. [2020-10-29 13:52:49,161 WARN L193 SmtUtils]: Spent 2.78 s on a formula simplification that was a NOOP. DAG size: 655 [2020-10-29 13:53:03,461 WARN L193 SmtUtils]: Spent 2.82 s on a formula simplification that was a NOOP. DAG size: 660 [2020-10-29 13:53:08,211 WARN L193 SmtUtils]: Spent 2.79 s on a formula simplification that was a NOOP. DAG size: 658 [2020-10-29 13:53:08,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:53:08,449 INFO L93 Difference]: Finished difference Result 6834 states and 10238 transitions. [2020-10-29 13:53:08,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 13:53:08,450 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 80 [2020-10-29 13:53:08,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:53:08,480 INFO L225 Difference]: With dead ends: 6834 [2020-10-29 13:53:08,480 INFO L226 Difference]: Without dead ends: 6056 [2020-10-29 13:53:08,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-29 13:53:08,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6056 states. [2020-10-29 13:53:08,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6056 to 2798. [2020-10-29 13:53:08,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2798 states. [2020-10-29 13:53:08,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 3936 transitions. [2020-10-29 13:53:08,670 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 3936 transitions. Word has length 80 [2020-10-29 13:53:08,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:53:08,671 INFO L481 AbstractCegarLoop]: Abstraction has 2798 states and 3936 transitions. [2020-10-29 13:53:08,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:53:08,671 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 3936 transitions. [2020-10-29 13:53:08,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 13:53:08,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:53:08,678 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:53:08,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:53:08,678 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:53:08,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:53:08,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1763562561, now seen corresponding path program 1 times [2020-10-29 13:53:08,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:53:08,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282372961] [2020-10-29 13:53:08,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:53:08,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:53:08,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:08,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:08,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:09,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:10,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:13,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:53:13,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 13:53:13,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:53:13,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 13:53:13,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:53:13,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:53:13,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:53:13,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-29 13:53:13,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 13:53:13,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:53:16,518 WARN L193 SmtUtils]: Spent 2.64 s on a formula simplification that was a NOOP. DAG size: 649 [2020-10-29 13:53:16,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:53:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:53:16,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:16,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:53:16,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:53:16,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:53:16,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 13:53:16,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:53:16,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:53:16,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:53:16,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:53:16,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:53:16,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 13:53:16,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:53:16,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282372961] [2020-10-29 13:53:16,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:53:16,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:53:16,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393155311] [2020-10-29 13:53:16,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:53:16,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:53:16,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:53:16,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:53:16,642 INFO L87 Difference]: Start difference. First operand 2798 states and 3936 transitions. Second operand 6 states. [2020-10-29 13:53:30,185 WARN L193 SmtUtils]: Spent 2.70 s on a formula simplification that was a NOOP. DAG size: 651 [2020-10-29 13:53:34,494 WARN L193 SmtUtils]: Spent 2.69 s on a formula simplification that was a NOOP. DAG size: 650 [2020-10-29 13:53:34,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:53:34,669 INFO L93 Difference]: Finished difference Result 6688 states and 9907 transitions. [2020-10-29 13:53:34,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 13:53:34,670 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-10-29 13:53:34,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:53:34,692 INFO L225 Difference]: With dead ends: 6688 [2020-10-29 13:53:34,692 INFO L226 Difference]: Without dead ends: 5872 [2020-10-29 13:53:34,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 13:53:34,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5872 states. [2020-10-29 13:53:34,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5872 to 2927. [2020-10-29 13:53:34,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2927 states. [2020-10-29 13:53:34,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2927 states to 2927 states and 4112 transitions. [2020-10-29 13:53:34,896 INFO L78 Accepts]: Start accepts. Automaton has 2927 states and 4112 transitions. Word has length 80 [2020-10-29 13:53:34,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:53:34,896 INFO L481 AbstractCegarLoop]: Abstraction has 2927 states and 4112 transitions. [2020-10-29 13:53:34,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:53:34,896 INFO L276 IsEmpty]: Start isEmpty. Operand 2927 states and 4112 transitions. [2020-10-29 13:53:34,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 13:53:34,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:53:34,903 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:53:34,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:53:34,903 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:53:34,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:53:34,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1092545620, now seen corresponding path program 1 times [2020-10-29 13:53:34,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:53:34,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574380994] [2020-10-29 13:53:34,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:53:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:53:35,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:35,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:35,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:35,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:35,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:37,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:37,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:39,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:53:39,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 13:53:39,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:53:39,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 13:53:39,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:53:39,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:53:39,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:53:39,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:53:39,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 13:53:39,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:53:42,807 WARN L193 SmtUtils]: Spent 2.72 s on a formula simplification that was a NOOP. DAG size: 649 [2020-10-29 13:53:42,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:53:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:53:42,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:42,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:53:42,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:53:42,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:53:42,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 13:53:42,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:53:42,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:53:42,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:53:42,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:53:42,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:53:42,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:53:42,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:53:42,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [574380994] [2020-10-29 13:53:42,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:53:42,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:53:42,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76223349] [2020-10-29 13:53:42,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:53:42,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:53:42,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:53:42,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:53:42,934 INFO L87 Difference]: Start difference. First operand 2927 states and 4112 transitions. Second operand 6 states. [2020-10-29 13:53:45,809 WARN L193 SmtUtils]: Spent 2.75 s on a formula simplification that was a NOOP. DAG size: 655 [2020-10-29 13:53:56,478 WARN L193 SmtUtils]: Spent 2.79 s on a formula simplification that was a NOOP. DAG size: 654 [2020-10-29 13:53:57,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:53:57,628 INFO L93 Difference]: Finished difference Result 3663 states and 5235 transitions. [2020-10-29 13:53:57,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:53:57,629 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-10-29 13:53:57,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:53:57,637 INFO L225 Difference]: With dead ends: 3663 [2020-10-29 13:53:57,638 INFO L226 Difference]: Without dead ends: 2124 [2020-10-29 13:53:57,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:53:57,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2124 states. [2020-10-29 13:53:57,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2124 to 2117. [2020-10-29 13:53:57,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2117 states. [2020-10-29 13:53:57,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 2971 transitions. [2020-10-29 13:53:57,769 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 2971 transitions. Word has length 80 [2020-10-29 13:53:57,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:53:57,770 INFO L481 AbstractCegarLoop]: Abstraction has 2117 states and 2971 transitions. [2020-10-29 13:53:57,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:53:57,770 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 2971 transitions. [2020-10-29 13:53:57,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-29 13:53:57,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:53:57,776 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] [2020-10-29 13:53:57,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:53:57,776 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:53:57,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:53:57,777 INFO L82 PathProgramCache]: Analyzing trace with hash 834403514, now seen corresponding path program 1 times [2020-10-29 13:53:57,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:53:57,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456999187] [2020-10-29 13:53:57,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:53:57,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:53:57,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:57,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:58,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:58,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:58,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:58,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:59,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:01,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:02,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:54:02,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 13:54:02,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:54:02,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 13:54:02,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:54:02,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:54:02,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:54:02,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:54:02,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 13:54:02,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:54:05,614 WARN L193 SmtUtils]: Spent 2.60 s on a formula simplification that was a NOOP. DAG size: 649 [2020-10-29 13:54:05,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:54:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:54:05,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:05,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:54:05,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:54:05,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:54:05,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 13:54:05,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:54:05,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:54:05,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:54:05,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:54:05,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:54:05,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:54:05,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:54:05,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456999187] [2020-10-29 13:54:05,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:54:05,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:54:05,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513617297] [2020-10-29 13:54:05,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:54:05,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:54:05,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:54:05,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:54:05,711 INFO L87 Difference]: Start difference. First operand 2117 states and 2971 transitions. Second operand 8 states. [2020-10-29 13:54:08,493 WARN L193 SmtUtils]: Spent 2.66 s on a formula simplification that was a NOOP. DAG size: 655 [2020-10-29 13:54:19,884 WARN L193 SmtUtils]: Spent 2.76 s on a formula simplification that was a NOOP. DAG size: 657 [2020-10-29 13:54:22,978 WARN L193 SmtUtils]: Spent 2.71 s on a formula simplification that was a NOOP. DAG size: 651 [2020-10-29 13:54:27,602 WARN L193 SmtUtils]: Spent 2.75 s on a formula simplification that was a NOOP. DAG size: 656 [2020-10-29 13:54:30,403 WARN L193 SmtUtils]: Spent 2.72 s on a formula simplification that was a NOOP. DAG size: 650 [2020-10-29 13:54:30,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:54:30,874 INFO L93 Difference]: Finished difference Result 9663 states and 14415 transitions. [2020-10-29 13:54:30,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 13:54:30,875 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 81 [2020-10-29 13:54:30,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:54:30,909 INFO L225 Difference]: With dead ends: 9663 [2020-10-29 13:54:30,909 INFO L226 Difference]: Without dead ends: 8843 [2020-10-29 13:54:30,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2020-10-29 13:54:30,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8843 states. [2020-10-29 13:54:31,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8843 to 2189. [2020-10-29 13:54:31,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2189 states. [2020-10-29 13:54:31,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2189 states to 2189 states and 3063 transitions. [2020-10-29 13:54:31,134 INFO L78 Accepts]: Start accepts. Automaton has 2189 states and 3063 transitions. Word has length 81 [2020-10-29 13:54:31,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:54:31,134 INFO L481 AbstractCegarLoop]: Abstraction has 2189 states and 3063 transitions. [2020-10-29 13:54:31,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:54:31,134 INFO L276 IsEmpty]: Start isEmpty. Operand 2189 states and 3063 transitions. [2020-10-29 13:54:31,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-29 13:54:31,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:54:31,139 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] [2020-10-29 13:54:31,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:54:31,139 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:54:31,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:54:31,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1450432593, now seen corresponding path program 1 times [2020-10-29 13:54:31,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:54:31,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654440615] [2020-10-29 13:54:31,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:54:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:54:31,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:31,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:31,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:32,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:32,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:34,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:54:34,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 13:54:34,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:54:34,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3160 [2020-10-29 13:54:34,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:54:34,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:54:34,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:54:34,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 13:54:34,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 13:54:34,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:54:37,191 WARN L193 SmtUtils]: Spent 2.68 s on a formula simplification that was a NOOP. DAG size: 649 [2020-10-29 13:54:37,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:54:37,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:54:37,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:37,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:54:37,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:54:37,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:54:37,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 13:54:37,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:54:37,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:54:37,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:54:37,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:54:37,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:54:37,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:54:37,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:54:37,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654440615] [2020-10-29 13:54:37,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:54:37,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:54:37,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771053641] [2020-10-29 13:54:37,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:54:37,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:54:37,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:54:37,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:54:37,272 INFO L87 Difference]: Start difference. First operand 2189 states and 3063 transitions. Second operand 6 states. [2020-10-29 13:54:40,084 WARN L193 SmtUtils]: Spent 2.71 s on a formula simplification that was a NOOP. DAG size: 650 [2020-10-29 13:54:51,222 WARN L193 SmtUtils]: Spent 2.72 s on a formula simplification that was a NOOP. DAG size: 651 [2020-10-29 13:54:54,453 WARN L193 SmtUtils]: Spent 2.68 s on a formula simplification that was a NOOP. DAG size: 650 [2020-10-29 13:54:58,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:54:58,444 INFO L93 Difference]: Finished difference Result 9595 states and 14050 transitions. [2020-10-29 13:54:58,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 13:54:58,445 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-10-29 13:54:58,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:54:58,461 INFO L225 Difference]: With dead ends: 9595 [2020-10-29 13:54:58,461 INFO L226 Difference]: Without dead ends: 7698 [2020-10-29 13:54:58,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-29 13:54:58,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7698 states. [2020-10-29 13:54:58,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7698 to 4890. [2020-10-29 13:54:58,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4890 states. [2020-10-29 13:54:58,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4890 states to 4890 states and 7097 transitions. [2020-10-29 13:54:58,895 INFO L78 Accepts]: Start accepts. Automaton has 4890 states and 7097 transitions. Word has length 81 [2020-10-29 13:54:58,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:54:58,895 INFO L481 AbstractCegarLoop]: Abstraction has 4890 states and 7097 transitions. [2020-10-29 13:54:58,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:54:58,896 INFO L276 IsEmpty]: Start isEmpty. Operand 4890 states and 7097 transitions. [2020-10-29 13:54:58,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-29 13:54:58,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:54:58,902 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] [2020-10-29 13:54:58,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:54:58,903 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:54:58,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:54:58,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1042905222, now seen corresponding path program 1 times [2020-10-29 13:54:58,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:54:58,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767841350] [2020-10-29 13:54:58,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:54:58,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:54:58,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:59,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:59,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:59,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:59,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:02,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:03,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:55:03,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 13:55:03,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:55:03,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-29 13:55:03,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:55:03,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:55:03,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:55:03,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:55:03,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 13:55:03,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0