/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/eca-rers2012/Problem13_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:12:19,986 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:12:19,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:12:20,027 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:12:20,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:12:20,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:12:20,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:12:20,034 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:12:20,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:12:20,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:12:20,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:12:20,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:12:20,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:12:20,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:12:20,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:12:20,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:12:20,048 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:12:20,049 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:12:20,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:12:20,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:12:20,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:12:20,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:12:20,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:12:20,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:12:20,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:12:20,079 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:12:20,079 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:12:20,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:12:20,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:12:20,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:12:20,084 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:12:20,086 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:12:20,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:12:20,088 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:12:20,091 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:12:20,092 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:12:20,093 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:12:20,093 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:12:20,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:12:20,096 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:12:20,097 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:12:20,099 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 07:12:20,162 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:12:20,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:12:20,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:12:20,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:12:20,168 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:12:20,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:12:20,169 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:12:20,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:12:20,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:12:20,170 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:12:20,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:12:20,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:12:20,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:12:20,171 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:12:20,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:12:20,172 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:12:20,172 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:12:20,172 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:12:20,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:12:20,173 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:12:20,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:12:20,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:12:20,173 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:12:20,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:12:20,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:12:20,174 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:12:20,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:12:20,174 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:12:20,175 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:12:20,175 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:12:20,565 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:12:20,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:12:20,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:12:20,597 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:12:20,598 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:12:20,599 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label12.c [2020-10-29 07:12:20,699 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d2f3963c/39db44ddf83549e0b640dc35099bba8a/FLAG10d1917fb [2020-10-29 07:12:21,841 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:12:21,842 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label12.c [2020-10-29 07:12:21,881 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d2f3963c/39db44ddf83549e0b640dc35099bba8a/FLAG10d1917fb [2020-10-29 07:12:22,303 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d2f3963c/39db44ddf83549e0b640dc35099bba8a [2020-10-29 07:12:22,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:12:22,314 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:12:22,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:12:22,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:12:22,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:12:22,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:12:22" (1/1) ... [2020-10-29 07:12:22,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31fea257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:12:22, skipping insertion in model container [2020-10-29 07:12:22,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:12:22" (1/1) ... [2020-10-29 07:12:22,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:12:22,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:12:24,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:12:24,285 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:12:25,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:12:25,166 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:12:25,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:12:25 WrapperNode [2020-10-29 07:12:25,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:12:25,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:12:25,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:12:25,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:12:25,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:12:25" (1/1) ... [2020-10-29 07:12:25,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:12:25" (1/1) ... [2020-10-29 07:12:25,287 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:12:25" (1/1) ... [2020-10-29 07:12:25,287 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:12:25" (1/1) ... [2020-10-29 07:12:25,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:12:25" (1/1) ... [2020-10-29 07:12:25,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:12:25" (1/1) ... [2020-10-29 07:12:25,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:12:25" (1/1) ... [2020-10-29 07:12:25,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:12:25,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:12:25,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:12:25,640 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:12:25,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:12:25" (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 07:12:25,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:12:25,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:12:25,731 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:12:25,732 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:12:25,732 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:12:25,732 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:12:25,733 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:12:25,733 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:12:25,733 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:12:25,733 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:12:25,734 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:12:25,734 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:12:25,734 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:12:25,735 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:12:25,735 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:12:25,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:12:25,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:12:25,736 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:12:25,736 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:12:25,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:12:25,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:12:25,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:12:25,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:12:25,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:12:25,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:12:36,024 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:12:36,024 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:12:36,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:12:36 BoogieIcfgContainer [2020-10-29 07:12:36,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:12:36,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:12:36,040 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:12:36,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:12:36,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:12:22" (1/3) ... [2020-10-29 07:12:36,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a4b20a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:12:36, skipping insertion in model container [2020-10-29 07:12:36,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:12:25" (2/3) ... [2020-10-29 07:12:36,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a4b20a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:12:36, skipping insertion in model container [2020-10-29 07:12:36,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:12:36" (3/3) ... [2020-10-29 07:12:36,054 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label12.c [2020-10-29 07:12:36,067 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:12:36,074 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:12:36,091 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:12:36,144 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:12:36,144 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:12:36,144 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:12:36,145 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:12:36,145 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:12:36,145 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:12:36,145 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:12:36,145 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:12:36,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-29 07:12:36,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-29 07:12:36,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:12:36,212 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:12:36,213 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:12:36,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:12:36,223 INFO L82 PathProgramCache]: Analyzing trace with hash 249371746, now seen corresponding path program 1 times [2020-10-29 07:12:36,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:12:36,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922115314] [2020-10-29 07:12:36,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:12:36,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:12:36,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:36,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:12:36,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 07:12:36,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:12:36,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 547 [2020-10-29 07:12:36,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:12:36,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:12:36,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:12:36,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:12:36,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 07:12:36,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:12:37,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:12:37,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:12:37,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:37,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:12:37,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:12:37,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:12:37,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 07:12:37,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:12:37,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:12:37,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:12:37,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:12:37,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:12:37,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:12:37,178 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 07:12:37,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922115314] [2020-10-29 07:12:37,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:12:37,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 07:12:37,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790490277] [2020-10-29 07:12:37,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:12:37,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:12:37,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:12:37,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:12:37,211 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 5 states. [2020-10-29 07:12:59,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:12:59,743 INFO L93 Difference]: Finished difference Result 4085 states and 7568 transitions. [2020-10-29 07:12:59,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:12:59,748 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-29 07:12:59,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:12:59,802 INFO L225 Difference]: With dead ends: 4085 [2020-10-29 07:12:59,802 INFO L226 Difference]: Without dead ends: 2873 [2020-10-29 07:12:59,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:12:59,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2020-10-29 07:13:00,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 1935. [2020-10-29 07:13:00,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1935 states. [2020-10-29 07:13:00,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1935 states to 1935 states and 3164 transitions. [2020-10-29 07:13:00,067 INFO L78 Accepts]: Start accepts. Automaton has 1935 states and 3164 transitions. Word has length 16 [2020-10-29 07:13:00,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:13:00,067 INFO L481 AbstractCegarLoop]: Abstraction has 1935 states and 3164 transitions. [2020-10-29 07:13:00,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:13:00,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states and 3164 transitions. [2020-10-29 07:13:00,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 07:13:00,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:13:00,076 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:13:00,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:13:00,078 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:13:00,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:13:00,080 INFO L82 PathProgramCache]: Analyzing trace with hash -733705670, now seen corresponding path program 1 times [2020-10-29 07:13:00,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:13:00,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076734243] [2020-10-29 07:13:00,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:13:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:13:00,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:00,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:01,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:13:01,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 07:13:01,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:13:01,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1309 [2020-10-29 07:13:01,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:13:01,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:13:01,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:13:01,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:13:01,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 07:13:01,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:13:01,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:13:01,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:13:01,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:01,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:13:01,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:13:01,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:13:01,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 07:13:01,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:13:01,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:13:01,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:13:01,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:13:01,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:13:01,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:13:01,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:13:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:13:01,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:01,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:13:01,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:13:01,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:13:01,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-29 07:13:01,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:13:01,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:13:01,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:13:01,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:13:01,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:13:01,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:13:02,289 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:13:02,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076734243] [2020-10-29 07:13:02,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:13:02,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:13:02,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3936934] [2020-10-29 07:13:02,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:13:02,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:13:02,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:13:02,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:13:02,299 INFO L87 Difference]: Start difference. First operand 1935 states and 3164 transitions. Second operand 7 states. [2020-10-29 07:13:33,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:13:33,453 INFO L93 Difference]: Finished difference Result 5680 states and 9486 transitions. [2020-10-29 07:13:33,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:13:33,455 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 91 [2020-10-29 07:13:33,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:13:33,491 INFO L225 Difference]: With dead ends: 5680 [2020-10-29 07:13:33,492 INFO L226 Difference]: Without dead ends: 3751 [2020-10-29 07:13:33,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:13:33,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3751 states. [2020-10-29 07:13:33,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3751 to 3649. [2020-10-29 07:13:33,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3649 states. [2020-10-29 07:13:33,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3649 states to 3649 states and 5463 transitions. [2020-10-29 07:13:33,686 INFO L78 Accepts]: Start accepts. Automaton has 3649 states and 5463 transitions. Word has length 91 [2020-10-29 07:13:33,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:13:33,687 INFO L481 AbstractCegarLoop]: Abstraction has 3649 states and 5463 transitions. [2020-10-29 07:13:33,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:13:33,688 INFO L276 IsEmpty]: Start isEmpty. Operand 3649 states and 5463 transitions. [2020-10-29 07:13:33,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-29 07:13:33,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:13:33,699 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:13:33,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:13:33,699 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:13:33,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:13:33,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1144762622, now seen corresponding path program 1 times [2020-10-29 07:13:33,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:13:33,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311407349] [2020-10-29 07:13:33,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:13:33,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:13:33,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:34,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:35,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:13:35,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 07:13:35,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:13:35,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1460 [2020-10-29 07:13:35,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:13:35,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:13:35,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:13:35,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:13:35,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 07:13:35,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:13:35,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:13:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:13:35,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:35,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:13:35,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:13:35,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:13:35,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:13:35,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:13:35,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:13:35,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:13:35,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:13:35,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:13:35,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:13:35,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:13:35,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:13:35,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:35,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:13:35,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 07:13:35,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:13:35,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-29 07:13:35,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:13:35,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:13:35,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:13:35,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:13:35,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:13:35,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:13:35,971 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:13:35,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311407349] [2020-10-29 07:13:35,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:13:35,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:13:35,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237037237] [2020-10-29 07:13:35,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:13:35,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:13:35,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:13:35,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:13:35,977 INFO L87 Difference]: Start difference. First operand 3649 states and 5463 transitions. Second operand 7 states. [2020-10-29 07:14:05,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:14:05,658 INFO L93 Difference]: Finished difference Result 11005 states and 16911 transitions. [2020-10-29 07:14:05,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:14:05,660 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 105 [2020-10-29 07:14:05,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:14:05,711 INFO L225 Difference]: With dead ends: 11005 [2020-10-29 07:14:05,712 INFO L226 Difference]: Without dead ends: 7362 [2020-10-29 07:14:05,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:14:05,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7362 states. [2020-10-29 07:14:05,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7362 to 7147. [2020-10-29 07:14:05,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7147 states. [2020-10-29 07:14:05,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7147 states to 7147 states and 9659 transitions. [2020-10-29 07:14:05,965 INFO L78 Accepts]: Start accepts. Automaton has 7147 states and 9659 transitions. Word has length 105 [2020-10-29 07:14:05,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:14:05,965 INFO L481 AbstractCegarLoop]: Abstraction has 7147 states and 9659 transitions. [2020-10-29 07:14:05,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:14:05,968 INFO L276 IsEmpty]: Start isEmpty. Operand 7147 states and 9659 transitions. [2020-10-29 07:14:05,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-29 07:14:05,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:14:05,971 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:14:05,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:14:05,971 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:14:05,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:14:05,972 INFO L82 PathProgramCache]: Analyzing trace with hash -451542954, now seen corresponding path program 1 times [2020-10-29 07:14:05,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:14:05,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867344164] [2020-10-29 07:14:05,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:14:06,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:06,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:06,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:07,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:07,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:07,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 07:14:07,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:14:07,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1338 [2020-10-29 07:14:07,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:07,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:07,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:14:07,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:14:07,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-29 07:14:07,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:14:07,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:14:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:07,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:07,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:07,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:14:07,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:14:07,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:14:07,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:07,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:07,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:14:07,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:14:07,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:14:07,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:14:07,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:14:07,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:07,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:07,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:07,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:14:07,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:14:07,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-29 07:14:07,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:07,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:07,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:14:07,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:14:07,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-29 07:14:07,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 07:14:07,999 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:14:08,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867344164] [2020-10-29 07:14:08,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:14:08,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:14:08,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443171825] [2020-10-29 07:14:08,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:14:08,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:14:08,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:14:08,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:14:08,004 INFO L87 Difference]: Start difference. First operand 7147 states and 9659 transitions. Second operand 7 states. [2020-10-29 07:14:34,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:14:34,803 INFO L93 Difference]: Finished difference Result 21501 states and 30523 transitions. [2020-10-29 07:14:34,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:14:34,808 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-10-29 07:14:34,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:14:34,873 INFO L225 Difference]: With dead ends: 21501 [2020-10-29 07:14:34,873 INFO L226 Difference]: Without dead ends: 14360 [2020-10-29 07:14:34,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:14:34,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14360 states. [2020-10-29 07:14:35,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14360 to 13406. [2020-10-29 07:14:35,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13406 states. [2020-10-29 07:14:35,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13406 states to 13406 states and 17476 transitions. [2020-10-29 07:14:35,322 INFO L78 Accepts]: Start accepts. Automaton has 13406 states and 17476 transitions. Word has length 134 [2020-10-29 07:14:35,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:14:35,323 INFO L481 AbstractCegarLoop]: Abstraction has 13406 states and 17476 transitions. [2020-10-29 07:14:35,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:14:35,324 INFO L276 IsEmpty]: Start isEmpty. Operand 13406 states and 17476 transitions. [2020-10-29 07:14:35,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-29 07:14:35,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:14:35,328 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 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 07:14:35,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:14:35,328 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:14:35,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:14:35,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1063274586, now seen corresponding path program 1 times [2020-10-29 07:14:35,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:14:35,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201003717] [2020-10-29 07:14:35,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:14:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:35,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:35,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:35,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:40,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:40,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-29 07:14:40,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:14:40,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 07:14:40,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:40,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:40,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:14:40,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-29 07:14:40,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 07:14:40,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:14:40,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:14:40,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:40,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:40,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:40,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:14:40,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:14:40,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:14:40,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:40,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:40,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:14:40,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:14:40,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:14:40,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:14:40,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:14:40,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:40,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:40,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:40,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:14:40,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:14:40,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-29 07:14:40,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:40,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:40,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:14:40,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:14:40,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:14:40,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:14:40,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-29 07:14:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:40,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:41,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:41,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 07:14:41,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:14:41,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-29 07:14:41,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:41,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:41,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:14:41,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:14:41,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 07:14:41,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-29 07:14:41,326 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:14:41,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201003717] [2020-10-29 07:14:41,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:14:41,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:14:41,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225244165] [2020-10-29 07:14:41,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:14:41,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:14:41,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:14:41,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:14:41,330 INFO L87 Difference]: Start difference. First operand 13406 states and 17476 transitions. Second operand 7 states. [2020-10-29 07:15:14,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:15:14,156 INFO L93 Difference]: Finished difference Result 39819 states and 54240 transitions. [2020-10-29 07:15:14,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:15:14,159 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 216 [2020-10-29 07:15:14,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:15:14,264 INFO L225 Difference]: With dead ends: 39819 [2020-10-29 07:15:14,264 INFO L226 Difference]: Without dead ends: 26419 [2020-10-29 07:15:14,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:15:14,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26419 states. [2020-10-29 07:15:15,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26419 to 26209. [2020-10-29 07:15:15,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26209 states. [2020-10-29 07:15:15,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26209 states to 26209 states and 35775 transitions. [2020-10-29 07:15:15,235 INFO L78 Accepts]: Start accepts. Automaton has 26209 states and 35775 transitions. Word has length 216 [2020-10-29 07:15:15,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:15:15,236 INFO L481 AbstractCegarLoop]: Abstraction has 26209 states and 35775 transitions. [2020-10-29 07:15:15,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:15:15,236 INFO L276 IsEmpty]: Start isEmpty. Operand 26209 states and 35775 transitions. [2020-10-29 07:15:15,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-29 07:15:15,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:15:15,243 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:15,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:15:15,243 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:15:15,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:15:15,244 INFO L82 PathProgramCache]: Analyzing trace with hash 659549589, now seen corresponding path program 1 times [2020-10-29 07:15:15,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:15:15,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227149384] [2020-10-29 07:15:15,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:15:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:15:15,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:15,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:15,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:17,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:17,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:20,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:15:20,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-29 07:15:20,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:15:20,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 07:15:20,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:15:20,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:15:20,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:15:20,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-29 07:15:20,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-29 07:15:20,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:15:20,558 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:15:20,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:15:20,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:15:20,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:20,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:15:20,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:15:20,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:15:20,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 07:15:20,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:15:20,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:15:20,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:15:20,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:15:20,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:15:20,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:15:20,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:15:20,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:15:20,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:20,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:15:20,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-29 07:15:20,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:15:20,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-29 07:15:20,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:15:20,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:15:20,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:15:20,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:15:20,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:15:20,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:15:20,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-29 07:15:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:15:20,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:21,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:15:21,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 07:15:21,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:15:21,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-29 07:15:21,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:15:21,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:15:21,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:15:21,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:15:21,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:15:21,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:15:21,477 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:15:21,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227149384] [2020-10-29 07:15:21,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:15:21,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:15:21,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103848184] [2020-10-29 07:15:21,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:15:21,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:15:21,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:15:21,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:15:21,484 INFO L87 Difference]: Start difference. First operand 26209 states and 35775 transitions. Second operand 7 states. [2020-10-29 07:15:21,673 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:15:24,635 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:16:00,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:16:00,437 INFO L93 Difference]: Finished difference Result 75816 states and 117471 transitions. [2020-10-29 07:16:00,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:16:00,443 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 225 [2020-10-29 07:16:00,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:16:00,726 INFO L225 Difference]: With dead ends: 75816 [2020-10-29 07:16:00,726 INFO L226 Difference]: Without dead ends: 49613 [2020-10-29 07:16:00,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:16:00,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49613 states. [2020-10-29 07:16:03,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49613 to 48971. [2020-10-29 07:16:03,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48971 states. [2020-10-29 07:16:03,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48971 states to 48971 states and 68192 transitions. [2020-10-29 07:16:03,636 INFO L78 Accepts]: Start accepts. Automaton has 48971 states and 68192 transitions. Word has length 225 [2020-10-29 07:16:03,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:16:03,637 INFO L481 AbstractCegarLoop]: Abstraction has 48971 states and 68192 transitions. [2020-10-29 07:16:03,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:16:03,637 INFO L276 IsEmpty]: Start isEmpty. Operand 48971 states and 68192 transitions. [2020-10-29 07:16:03,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-29 07:16:03,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:16:03,644 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:16:03,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:16:03,645 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:16:03,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:16:03,645 INFO L82 PathProgramCache]: Analyzing trace with hash 317354013, now seen corresponding path program 1 times [2020-10-29 07:16:03,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:16:03,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330081137] [2020-10-29 07:16:03,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:16:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:16:03,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:03,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:04,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:04,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:06,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:07,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:16:07,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-29 07:16:07,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:16:07,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3599 [2020-10-29 07:16:07,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:16:07,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:16:07,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:16:07,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-29 07:16:07,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-29 07:16:07,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:16:07,629 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:16:07,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:16:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:16:07,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:07,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:16:07,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:16:07,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:16:07,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 07:16:07,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:16:07,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:16:07,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:16:07,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:16:07,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:16:07,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:16:07,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:16:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:16:07,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:07,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:07,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:16:07,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-29 07:16:07,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:16:07,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-29 07:16:07,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:16:07,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:16:07,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:16:07,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:16:07,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:16:07,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:16:08,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-29 07:16:08,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:16:08,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:08,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:16:08,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:16:08,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:16:08,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-29 07:16:08,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:16:08,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:16:08,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:16:08,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:16:08,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-29 07:16:08,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:16:08,558 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:16:08,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330081137] [2020-10-29 07:16:08,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:16:08,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:16:08,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115617570] [2020-10-29 07:16:08,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:16:08,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:16:08,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:16:08,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:16:08,562 INFO L87 Difference]: Start difference. First operand 48971 states and 68192 transitions. Second operand 7 states. [2020-10-29 07:16:09,750 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 66