/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/Problem12_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:05:23,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:05:23,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:05:23,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:05:23,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:05:23,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:05:23,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:05:23,106 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:05:23,111 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:05:23,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:05:23,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:05:23,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:05:23,122 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:05:23,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:05:23,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:05:23,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:05:23,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:05:23,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:05:23,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:05:23,162 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:05:23,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:05:23,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:05:23,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:05:23,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:05:23,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:05:23,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:05:23,180 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:05:23,182 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:05:23,183 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:05:23,184 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:05:23,184 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:05:23,185 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:05:23,187 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:05:23,188 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:05:23,189 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:05:23,189 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:05:23,190 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:05:23,190 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:05:23,190 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:05:23,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:05:23,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:05:23,200 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 07:05:23,256 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:05:23,256 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:05:23,261 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:05:23,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:05:23,262 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:05:23,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:05:23,262 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:05:23,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:05:23,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:05:23,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:05:23,264 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:05:23,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:05:23,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:05:23,264 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:05:23,264 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:05:23,265 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:05:23,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:05:23,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:05:23,265 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:05:23,265 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:05:23,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:05:23,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:05:23,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:05:23,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:05:23,266 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:05:23,267 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:05:23,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:05:23,267 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:05:23,267 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:05:23,267 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:05:23,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:05:23,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:05:23,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:05:23,765 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:05:23,766 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:05:23,767 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label47.c [2020-10-29 07:05:23,844 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aea0927f4/400d2d9625d049c99b73847bbfef71a0/FLAG445934a8a [2020-10-29 07:05:24,898 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:05:24,899 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label47.c [2020-10-29 07:05:24,951 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aea0927f4/400d2d9625d049c99b73847bbfef71a0/FLAG445934a8a [2020-10-29 07:05:25,339 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aea0927f4/400d2d9625d049c99b73847bbfef71a0 [2020-10-29 07:05:25,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:05:25,352 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:05:25,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:05:25,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:05:25,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:05:25,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:05:25" (1/1) ... [2020-10-29 07:05:25,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6788428e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:05:25, skipping insertion in model container [2020-10-29 07:05:25,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:05:25" (1/1) ... [2020-10-29 07:05:25,380 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:05:25,558 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:05:27,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:05:27,093 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:05:27,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:05:28,036 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:05:28,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:05:28 WrapperNode [2020-10-29 07:05:28,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:05:28,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:05:28,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:05:28,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:05:28,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:05:28" (1/1) ... [2020-10-29 07:05:28,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:05:28" (1/1) ... [2020-10-29 07:05:28,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:05:28" (1/1) ... [2020-10-29 07:05:28,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:05:28" (1/1) ... [2020-10-29 07:05:28,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:05:28" (1/1) ... [2020-10-29 07:05:28,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:05:28" (1/1) ... [2020-10-29 07:05:28,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:05:28" (1/1) ... [2020-10-29 07:05:28,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:05:28,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:05:28,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:05:28,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:05:28,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:05:28" (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 07:05:28,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:05:28,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:05:28,519 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:05:28,519 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:05:28,520 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:05:28,520 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:05:28,521 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:05:28,521 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:05:28,521 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:05:28,521 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:05:28,523 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:05:28,523 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:05:28,524 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:05:28,524 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:05:28,524 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:05:28,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:05:28,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:05:28,526 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:05:28,526 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:05:28,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:05:28,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:05:28,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:05:28,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:05:28,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:05:28,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:05:34,668 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:05:34,669 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:05:34,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:05:34 BoogieIcfgContainer [2020-10-29 07:05:34,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:05:34,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:05:34,677 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:05:34,681 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:05:34,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:05:25" (1/3) ... [2020-10-29 07:05:34,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3593823c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:05:34, skipping insertion in model container [2020-10-29 07:05:34,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:05:28" (2/3) ... [2020-10-29 07:05:34,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3593823c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:05:34, skipping insertion in model container [2020-10-29 07:05:34,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:05:34" (3/3) ... [2020-10-29 07:05:34,686 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label47.c [2020-10-29 07:05:34,718 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:05:34,735 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:05:34,774 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:05:34,849 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:05:34,849 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:05:34,849 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:05:34,849 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:05:34,849 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:05:34,850 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:05:34,850 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:05:34,850 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:05:34,891 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-29 07:05:34,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 07:05:34,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:05:34,901 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] [2020-10-29 07:05:34,902 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:05:34,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:05:34,910 INFO L82 PathProgramCache]: Analyzing trace with hash 244672676, now seen corresponding path program 1 times [2020-10-29 07:05:34,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:05:34,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86112977] [2020-10-29 07:05:34,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:05:35,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:35,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:35,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:35,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 07:05:35,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:05:35,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 760 [2020-10-29 07:05:35,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:35,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:35,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:05:35,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:05:35,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 07:05:35,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 07:05:36,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:05:36,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:36,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:36,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:36,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:05:36,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:05:36,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 07:05:36,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:36,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:36,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:05:36,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:05:36,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:05:36,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:05:36,217 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 07:05:36,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [86112977] [2020-10-29 07:05:36,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:05:36,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:05:36,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851513403] [2020-10-29 07:05:36,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:05:36,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:05:36,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:05:36,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:05:36,261 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-29 07:05:48,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:05:48,169 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-29 07:05:48,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:05:48,172 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-10-29 07:05:48,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:05:48,208 INFO L225 Difference]: With dead ends: 2476 [2020-10-29 07:05:48,208 INFO L226 Difference]: Without dead ends: 1569 [2020-10-29 07:05:48,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:05:48,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-29 07:05:48,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-29 07:05:48,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-29 07:05:48,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2726 transitions. [2020-10-29 07:05:48,387 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2726 transitions. Word has length 45 [2020-10-29 07:05:48,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:05:48,388 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2726 transitions. [2020-10-29 07:05:48,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:05:48,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2726 transitions. [2020-10-29 07:05:48,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-29 07:05:48,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:05:48,395 INFO L422 BasicCegarLoop]: trace histogram [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 07:05:48,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:05:48,396 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:05:48,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:05:48,397 INFO L82 PathProgramCache]: Analyzing trace with hash -92946855, now seen corresponding path program 1 times [2020-10-29 07:05:48,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:05:48,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128337513] [2020-10-29 07:05:48,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:05:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:48,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:48,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:49,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:49,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:49,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-29 07:05:49,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:05:49,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1233 [2020-10-29 07:05:49,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:49,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:49,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:05:49,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:05:49,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 07:05:49,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 07:05:49,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:05:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:49,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:49,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:49,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:05:49,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:05:49,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:05:49,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:49,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:49,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:05:49,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:05:49,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:05:49,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:05:49,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:05:49,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:49,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:50,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:50,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:50,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:05:50,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:05:50,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-29 07:05:50,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:50,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:50,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:05:50,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:05:50,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:05:50,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:05:50,293 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:05:50,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128337513] [2020-10-29 07:05:50,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:05:50,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:05:50,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424642196] [2020-10-29 07:05:50,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:05:50,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:05:50,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:05:50,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:05:50,302 INFO L87 Difference]: Start difference. First operand 1554 states and 2726 transitions. Second operand 7 states. [2020-10-29 07:06:09,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:06:09,526 INFO L93 Difference]: Finished difference Result 6288 states and 11219 transitions. [2020-10-29 07:06:09,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:06:09,527 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-29 07:06:09,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:06:09,568 INFO L225 Difference]: With dead ends: 6288 [2020-10-29 07:06:09,568 INFO L226 Difference]: Without dead ends: 4740 [2020-10-29 07:06:09,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:06:09,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4740 states. [2020-10-29 07:06:09,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4740 to 4701. [2020-10-29 07:06:09,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4701 states. [2020-10-29 07:06:09,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4701 states to 4701 states and 7368 transitions. [2020-10-29 07:06:09,725 INFO L78 Accepts]: Start accepts. Automaton has 4701 states and 7368 transitions. Word has length 114 [2020-10-29 07:06:09,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:06:09,726 INFO L481 AbstractCegarLoop]: Abstraction has 4701 states and 7368 transitions. [2020-10-29 07:06:09,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:06:09,726 INFO L276 IsEmpty]: Start isEmpty. Operand 4701 states and 7368 transitions. [2020-10-29 07:06:09,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-29 07:06:09,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:06:09,730 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 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 07:06:09,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:06:09,730 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:06:09,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:06:09,731 INFO L82 PathProgramCache]: Analyzing trace with hash -74257663, now seen corresponding path program 1 times [2020-10-29 07:06:09,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:06:09,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460961408] [2020-10-29 07:06:09,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:06:09,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:09,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:10,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:10,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:10,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-29 07:06:10,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:06:10,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 960 [2020-10-29 07:06:10,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:10,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:10,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:06:10,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:06:10,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 07:06:10,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:06:10,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:06:10,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:10,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:10,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:10,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:06:10,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:06:10,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:06:10,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:10,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:10,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:06:10,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:06:10,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:06:10,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:06:10,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:06:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:10,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:11,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:11,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 07:06:11,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:06:11,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-29 07:06:11,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:11,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:11,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:06:11,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:06:11,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 07:06:11,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:06:11,311 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:06:11,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460961408] [2020-10-29 07:06:11,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:06:11,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:06:11,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469364974] [2020-10-29 07:06:11,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:06:11,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:06:11,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:06:11,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:06:11,317 INFO L87 Difference]: Start difference. First operand 4701 states and 7368 transitions. Second operand 7 states. [2020-10-29 07:06:26,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:06:26,369 INFO L93 Difference]: Finished difference Result 14499 states and 23557 transitions. [2020-10-29 07:06:26,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:06:26,370 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 139 [2020-10-29 07:06:26,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:06:26,431 INFO L225 Difference]: With dead ends: 14499 [2020-10-29 07:06:26,432 INFO L226 Difference]: Without dead ends: 9804 [2020-10-29 07:06:26,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:06:26,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9804 states. [2020-10-29 07:06:26,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9804 to 9606. [2020-10-29 07:06:26,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9606 states. [2020-10-29 07:06:26,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9606 states to 9606 states and 14191 transitions. [2020-10-29 07:06:26,857 INFO L78 Accepts]: Start accepts. Automaton has 9606 states and 14191 transitions. Word has length 139 [2020-10-29 07:06:26,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:06:26,861 INFO L481 AbstractCegarLoop]: Abstraction has 9606 states and 14191 transitions. [2020-10-29 07:06:26,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:06:26,861 INFO L276 IsEmpty]: Start isEmpty. Operand 9606 states and 14191 transitions. [2020-10-29 07:06:26,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-29 07:06:26,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:06:26,878 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:06:26,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:06:26,879 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:06:26,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:06:26,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1872402275, now seen corresponding path program 1 times [2020-10-29 07:06:26,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:06:26,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058228827] [2020-10-29 07:06:26,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:06:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:26,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:27,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:28,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:28,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 07:06:28,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:06:28,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1076 [2020-10-29 07:06:28,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:28,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:28,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:06:28,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:06:28,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 07:06:28,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:06:28,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:06:28,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:28,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:28,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:28,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:06:28,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:06:28,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:06:28,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:28,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:28,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:06:28,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:06:28,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:06:28,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:06:28,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:06:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:28,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:28,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:28,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 07:06:28,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:06:28,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-29 07:06:28,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:28,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:28,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:06:28,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:06:28,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 07:06:28,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 07:06:28,479 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:06:28,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058228827] [2020-10-29 07:06:28,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:06:28,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:06:28,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616092984] [2020-10-29 07:06:28,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:06:28,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:06:28,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:06:28,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:06:28,482 INFO L87 Difference]: Start difference. First operand 9606 states and 14191 transitions. Second operand 7 states. [2020-10-29 07:06:45,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:06:45,412 INFO L93 Difference]: Finished difference Result 29772 states and 46925 transitions. [2020-10-29 07:06:45,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:06:45,413 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 148 [2020-10-29 07:06:45,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:06:45,530 INFO L225 Difference]: With dead ends: 29772 [2020-10-29 07:06:45,530 INFO L226 Difference]: Without dead ends: 20172 [2020-10-29 07:06:45,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:06:45,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20172 states. [2020-10-29 07:06:46,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20172 to 19780. [2020-10-29 07:06:46,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19780 states. [2020-10-29 07:06:46,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19780 states to 19780 states and 27651 transitions. [2020-10-29 07:06:46,219 INFO L78 Accepts]: Start accepts. Automaton has 19780 states and 27651 transitions. Word has length 148 [2020-10-29 07:06:46,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:06:46,221 INFO L481 AbstractCegarLoop]: Abstraction has 19780 states and 27651 transitions. [2020-10-29 07:06:46,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:06:46,221 INFO L276 IsEmpty]: Start isEmpty. Operand 19780 states and 27651 transitions. [2020-10-29 07:06:46,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-29 07:06:46,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:06:46,228 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:06:46,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:06:46,229 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:06:46,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:06:46,229 INFO L82 PathProgramCache]: Analyzing trace with hash -292924674, now seen corresponding path program 1 times [2020-10-29 07:06:46,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:06:46,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827160057] [2020-10-29 07:06:46,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:06:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:46,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:46,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:46,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:47,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:47,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-29 07:06:47,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:06:47,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1381 [2020-10-29 07:06:47,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:47,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:47,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:06:47,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 07:06:47,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 07:06:47,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:06:47,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:06:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:47,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:47,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:47,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:06:47,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:06:47,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:06:47,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:47,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:47,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:06:47,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:06:47,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:06:47,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:06:47,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:06:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:47,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:47,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:47,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:06:47,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:06:47,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 07:06:47,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:47,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:47,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:06:47,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:06:47,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:06:47,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:06:47,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 07:06:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:48,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:48,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:48,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 07:06:48,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:06:48,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-29 07:06:48,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:48,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:48,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:06:48,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:06:48,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 07:06:48,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 07:06:48,455 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:06:48,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827160057] [2020-10-29 07:06:48,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:06:48,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:06:48,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173304843] [2020-10-29 07:06:48,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:06:48,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:06:48,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:06:48,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:06:48,457 INFO L87 Difference]: Start difference. First operand 19780 states and 27651 transitions. Second operand 7 states. [2020-10-29 07:07:14,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:07:14,255 INFO L93 Difference]: Finished difference Result 71613 states and 110567 transitions. [2020-10-29 07:07:14,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:07:14,257 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 244 [2020-10-29 07:07:14,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:07:14,444 INFO L225 Difference]: With dead ends: 71613 [2020-10-29 07:07:14,444 INFO L226 Difference]: Without dead ends: 44513 [2020-10-29 07:07:14,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:07:14,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44513 states. [2020-10-29 07:07:16,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44513 to 44295. [2020-10-29 07:07:16,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44295 states. [2020-10-29 07:07:16,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44295 states to 44295 states and 59277 transitions. [2020-10-29 07:07:16,527 INFO L78 Accepts]: Start accepts. Automaton has 44295 states and 59277 transitions. Word has length 244 [2020-10-29 07:07:16,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:07:16,530 INFO L481 AbstractCegarLoop]: Abstraction has 44295 states and 59277 transitions. [2020-10-29 07:07:16,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:07:16,531 INFO L276 IsEmpty]: Start isEmpty. Operand 44295 states and 59277 transitions. [2020-10-29 07:07:16,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-29 07:07:16,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:07:16,546 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:16,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:07:16,547 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:07:16,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:07:16,547 INFO L82 PathProgramCache]: Analyzing trace with hash -592313936, now seen corresponding path program 1 times [2020-10-29 07:07:16,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:07:16,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061535449] [2020-10-29 07:07:16,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:07:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:16,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:17,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:17,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-29 07:07:17,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:07:17,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 671 [2020-10-29 07:07:17,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:17,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:17,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:07:17,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 260 [2020-10-29 07:07:17,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 07:07:17,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 07:07:17,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:07:17,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:17,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:17,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:17,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:07:17,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:07:17,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:07:17,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:17,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:17,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:07:17,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:07:17,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:07:17,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:07:17,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:07:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:17,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:17,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:17,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 07:07:17,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:07:17,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 07:07:17,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:17,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:17,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:07:17,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:07:17,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:07:17,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:07:17,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 07:07:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:17,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:17,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:17,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 07:07:17,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:07:17,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-29 07:07:17,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:17,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:17,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:07:17,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:07:17,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 07:07:17,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:07:18,027 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-29 07:07:18,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061535449] [2020-10-29 07:07:18,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:07:18,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:07:18,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542899254] [2020-10-29 07:07:18,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:07:18,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:07:18,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:07:18,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:07:18,033 INFO L87 Difference]: Start difference. First operand 44295 states and 59277 transitions. Second operand 5 states. [2020-10-29 07:07:33,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:07:33,183 INFO L93 Difference]: Finished difference Result 109557 states and 152401 transitions. [2020-10-29 07:07:33,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:07:33,186 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 293 [2020-10-29 07:07:33,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:07:33,492 INFO L225 Difference]: With dead ends: 109557 [2020-10-29 07:07:33,492 INFO L226 Difference]: Without dead ends: 65280 [2020-10-29 07:07:33,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:07:33,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65280 states. [2020-10-29 07:07:35,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65280 to 65222. [2020-10-29 07:07:35,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65222 states. [2020-10-29 07:07:35,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65222 states to 65222 states and 85146 transitions. [2020-10-29 07:07:35,931 INFO L78 Accepts]: Start accepts. Automaton has 65222 states and 85146 transitions. Word has length 293 [2020-10-29 07:07:35,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:07:35,932 INFO L481 AbstractCegarLoop]: Abstraction has 65222 states and 85146 transitions. [2020-10-29 07:07:35,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:07:35,932 INFO L276 IsEmpty]: Start isEmpty. Operand 65222 states and 85146 transitions. [2020-10-29 07:07:36,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-29 07:07:36,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:07:36,146 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:36,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:07:36,146 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:07:36,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:07:36,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1710377082, now seen corresponding path program 1 times [2020-10-29 07:07:36,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:07:36,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108797412] [2020-10-29 07:07:36,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:07:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:36,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:36,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:37,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:41,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:41,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-29 07:07:41,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:07:41,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 07:07:41,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:41,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:41,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:07:41,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-29 07:07:41,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 07:07:41,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:07:41,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:07:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:41,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:41,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:41,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:07:41,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:07:41,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:07:41,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:41,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:41,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:07:41,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:07:41,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:07:41,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:07:41,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:07:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:41,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:41,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:41,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 07:07:41,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:07:41,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-29 07:07:41,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:41,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:41,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:07:41,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:07:41,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-29 07:07:41,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:07:41,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-29 07:07:41,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:41,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:42,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:42,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 07:07:42,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:07:42,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-29 07:07:42,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:42,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:42,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:07:42,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:07:42,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 07:07:42,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:07:42,280 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 195 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:07:42,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108797412] [2020-10-29 07:07:42,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:07:42,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:07:42,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620333209] [2020-10-29 07:07:42,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:07:42,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:07:42,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:07:42,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:07:42,284 INFO L87 Difference]: Start difference. First operand 65222 states and 85146 transitions. Second operand 7 states. [2020-10-29 07:08:03,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:08:03,086 INFO L93 Difference]: Finished difference Result 147610 states and 210929 transitions. [2020-10-29 07:08:03,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:08:03,089 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 317 [2020-10-29 07:08:03,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:08:03,601 INFO L225 Difference]: With dead ends: 147610 [2020-10-29 07:08:03,602 INFO L226 Difference]: Without dead ends: 82406 [2020-10-29 07:08:03,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:08:03,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82406 states. [2020-10-29 07:08:07,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82406 to 81589. [2020-10-29 07:08:07,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81589 states. [2020-10-29 07:08:07,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81589 states to 81589 states and 101958 transitions. [2020-10-29 07:08:07,610 INFO L78 Accepts]: Start accepts. Automaton has 81589 states and 101958 transitions. Word has length 317 [2020-10-29 07:08:07,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:08:07,612 INFO L481 AbstractCegarLoop]: Abstraction has 81589 states and 101958 transitions. [2020-10-29 07:08:07,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:08:07,613 INFO L276 IsEmpty]: Start isEmpty. Operand 81589 states and 101958 transitions. [2020-10-29 07:08:07,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-29 07:08:07,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:08:07,625 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:08:07,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:08:07,626 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:08:07,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:08:07,627 INFO L82 PathProgramCache]: Analyzing trace with hash -184123758, now seen corresponding path program 1 times [2020-10-29 07:08:07,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:08:07,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243446861] [2020-10-29 07:08:07,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:08:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:07,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:08,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:09,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:12,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:12,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-29 07:08:12,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:08:12,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-29 07:08:12,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:12,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:12,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:08:12,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:08:12,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-29 07:08:12,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:08:12,921 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:08:12,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:08:12,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:12,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:12,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:12,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:08:12,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:12,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:08:12,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:12,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:12,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:08:12,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:08:12,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:08:12,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:08:12,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:08:13,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:13,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:13,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:13,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-29 07:08:13,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:13,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-10-29 07:08:13,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:13,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:13,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:08:13,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:08:13,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-29 07:08:13,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:08:13,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-10-29 07:08:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:13,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:13,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:13,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:08:13,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:13,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 07:08:13,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:13,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:13,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:08:13,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 07:08:13,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:08:13,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:08:13,886 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 74 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:08:13,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243446861] [2020-10-29 07:08:13,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:08:13,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:08:13,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652846795] [2020-10-29 07:08:13,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:08:13,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:08:13,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:08:13,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:08:13,889 INFO L87 Difference]: Start difference. First operand 81589 states and 101958 transitions. Second operand 7 states. [2020-10-29 07:08:14,061 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:08:33,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:08:33,749 INFO L93 Difference]: Finished difference Result 156397 states and 201363 transitions. [2020-10-29 07:08:33,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:08:33,751 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 323 [2020-10-29 07:08:33,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:08:33,975 INFO L225 Difference]: With dead ends: 156397 [2020-10-29 07:08:33,976 INFO L226 Difference]: Without dead ends: 75589 [2020-10-29 07:08:34,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:08:34,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75589 states. [2020-10-29 07:08:35,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75589 to 70951. [2020-10-29 07:08:35,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70951 states. [2020-10-29 07:08:36,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70951 states to 70951 states and 87800 transitions. [2020-10-29 07:08:36,498 INFO L78 Accepts]: Start accepts. Automaton has 70951 states and 87800 transitions. Word has length 323 [2020-10-29 07:08:36,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:08:36,499 INFO L481 AbstractCegarLoop]: Abstraction has 70951 states and 87800 transitions. [2020-10-29 07:08:36,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:08:36,499 INFO L276 IsEmpty]: Start isEmpty. Operand 70951 states and 87800 transitions. [2020-10-29 07:08:36,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2020-10-29 07:08:36,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:08:36,515 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-10-29 07:08:36,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:08:36,515 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:08:36,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:08:36,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1490014646, now seen corresponding path program 1 times [2020-10-29 07:08:36,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:08:36,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29132759] [2020-10-29 07:08:36,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:08:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:36,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:36,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:37,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:41,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:41,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 397 [2020-10-29 07:08:41,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:08:41,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 07:08:41,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:41,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:41,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:08:41,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-29 07:08:41,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-29 07:08:41,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:08:41,846 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:08:41,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:08:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:41,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:41,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:41,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:08:41,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:41,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:08:41,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:41,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:41,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:08:41,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:08:41,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:08:41,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:08:41,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:08:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:41,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:42,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:42,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 07:08:42,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:42,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-29 07:08:42,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:42,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:42,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:08:42,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:08:42,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-29 07:08:42,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:08:42,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-29 07:08:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:42,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:42,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:42,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-29 07:08:42,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:42,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-10-29 07:08:42,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:42,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:42,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:08:42,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:08:42,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-29 07:08:42,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:08:42,918 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 219 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:08:42,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [29132759] [2020-10-29 07:08:42,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:08:42,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:08:42,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189720168] [2020-10-29 07:08:42,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:08:42,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:08:42,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:08:42,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:08:42,925 INFO L87 Difference]: Start difference. First operand 70951 states and 87800 transitions. Second operand 7 states.