/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/Problem17_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:18:39,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:18:39,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:18:39,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:18:39,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:18:39,634 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:18:39,636 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:18:39,638 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:18:39,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:18:39,642 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:18:39,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:18:39,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:18:39,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:18:39,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:18:39,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:18:39,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:18:39,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:18:39,654 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:18:39,657 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:18:39,674 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:18:39,676 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:18:39,678 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:18:39,679 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:18:39,680 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:18:39,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:18:39,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:18:39,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:18:39,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:18:39,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:18:39,687 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:18:39,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:18:39,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:18:39,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:18:39,690 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:18:39,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:18:39,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:18:39,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:18:39,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:18:39,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:18:39,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:18:39,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:18:39,696 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 08:18:39,726 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:18:39,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:18:39,729 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:18:39,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:18:39,731 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:18:39,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:18:39,732 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:18:39,732 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:18:39,732 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:18:39,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:18:39,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:18:39,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:18:39,734 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:18:39,734 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:18:39,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:18:39,735 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:18:39,735 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:18:39,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:18:39,736 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:18:39,736 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:18:39,736 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:18:39,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:18:39,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:18:39,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:18:39,738 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:18:39,738 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:18:39,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:18:39,739 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:18:39,739 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:18:39,739 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:18:40,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:18:40,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:18:40,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:18:40,163 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:18:40,164 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:18:40,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label33.c [2020-10-29 08:18:40,251 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71aea4d48/54bfee39621a4ac0b35000eb73dac2f2/FLAGbb073e046 [2020-10-29 08:18:41,095 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:18:41,096 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label33.c [2020-10-29 08:18:41,122 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71aea4d48/54bfee39621a4ac0b35000eb73dac2f2/FLAGbb073e046 [2020-10-29 08:18:41,191 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71aea4d48/54bfee39621a4ac0b35000eb73dac2f2 [2020-10-29 08:18:41,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:18:41,202 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:18:41,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:18:41,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:18:41,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:18:41,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:18:41" (1/1) ... [2020-10-29 08:18:41,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d7c3071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:18:41, skipping insertion in model container [2020-10-29 08:18:41,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:18:41" (1/1) ... [2020-10-29 08:18:41,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:18:41,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:18:42,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:18:42,349 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:18:42,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:18:42,819 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:18:42,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:18:42 WrapperNode [2020-10-29 08:18:42,821 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:18:42,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:18:42,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:18:42,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:18:42,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:18:42" (1/1) ... [2020-10-29 08:18:42,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:18:42" (1/1) ... [2020-10-29 08:18:42,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:18:42" (1/1) ... [2020-10-29 08:18:42,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:18:42" (1/1) ... [2020-10-29 08:18:43,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:18:42" (1/1) ... [2020-10-29 08:18:43,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:18:42" (1/1) ... [2020-10-29 08:18:43,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:18:42" (1/1) ... [2020-10-29 08:18:43,162 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:18:43,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:18:43,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:18:43,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:18:43,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:18:42" (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 08:18:43,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:18:43,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:18:43,239 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:18:43,239 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:18:43,239 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:18:43,239 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:18:43,240 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:18:43,240 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:18:43,240 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:18:43,240 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:18:43,240 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:18:43,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:18:43,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:18:43,241 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:18:43,241 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:18:43,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:18:43,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:18:43,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:18:43,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:18:43,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:18:43,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:18:52,109 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:18:52,110 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:18:52,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:18:52 BoogieIcfgContainer [2020-10-29 08:18:52,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:18:52,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:18:52,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:18:52,119 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:18:52,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:18:41" (1/3) ... [2020-10-29 08:18:52,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e54590f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:18:52, skipping insertion in model container [2020-10-29 08:18:52,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:18:42" (2/3) ... [2020-10-29 08:18:52,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e54590f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:18:52, skipping insertion in model container [2020-10-29 08:18:52,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:18:52" (3/3) ... [2020-10-29 08:18:52,122 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label33.c [2020-10-29 08:18:52,134 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:18:52,140 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:18:52,154 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:18:52,188 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:18:52,188 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:18:52,188 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:18:52,188 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:18:52,188 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:18:52,188 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:18:52,188 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:18:52,189 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:18:52,219 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-29 08:18:52,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 08:18:52,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:18:52,226 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] [2020-10-29 08:18:52,227 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:18:52,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:18:52,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1367084277, now seen corresponding path program 1 times [2020-10-29 08:18:52,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:18:52,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133604860] [2020-10-29 08:18:52,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:18:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:18:52,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:53,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:18:53,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 08:18:53,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:18:53,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 615 [2020-10-29 08:18:53,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:18:53,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:18:53,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:18:53,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:18:53,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 08:18:53,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:18:53,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:18:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:18:53,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:53,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:18:53,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:18:53,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:18:53,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 08:18:53,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:18:53,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:18:53,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:18:53,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:18:53,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:18:53,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:18:53,252 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 08:18:53,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133604860] [2020-10-29 08:18:53,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:18:53,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:18:53,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467644262] [2020-10-29 08:18:53,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:18:53,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:18:53,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:18:53,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:18:53,283 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-29 08:19:06,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:19:06,605 INFO L93 Difference]: Finished difference Result 1697 states and 3097 transitions. [2020-10-29 08:19:06,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:19:06,608 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-29 08:19:06,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:19:06,642 INFO L225 Difference]: With dead ends: 1697 [2020-10-29 08:19:06,642 INFO L226 Difference]: Without dead ends: 1013 [2020-10-29 08:19:06,659 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 08:19:06,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2020-10-29 08:19:06,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 1003. [2020-10-29 08:19:06,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-10-29 08:19:06,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1543 transitions. [2020-10-29 08:19:06,832 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1543 transitions. Word has length 23 [2020-10-29 08:19:06,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:19:06,833 INFO L481 AbstractCegarLoop]: Abstraction has 1003 states and 1543 transitions. [2020-10-29 08:19:06,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:19:06,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1543 transitions. [2020-10-29 08:19:06,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 08:19:06,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:19:06,843 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 08:19:06,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:19:06,844 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:19:06,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:19:06,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1989946058, now seen corresponding path program 1 times [2020-10-29 08:19:06,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:19:06,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400149861] [2020-10-29 08:19:06,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:19:06,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:07,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:07,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:08,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:08,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:08,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 08:19:08,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:19:08,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1342 [2020-10-29 08:19:08,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:08,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:08,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:19:08,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:19:08,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 08:19:08,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:19:08,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:19:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:08,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:08,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:08,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:19:08,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:19:08,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 08:19:08,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:08,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:08,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:19:08,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:19:08,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:19:08,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 08:19:08,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:19:08,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:08,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:08,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:08,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:19:08,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:19:08,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-29 08:19:08,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:08,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:08,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:19:08,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:19:08,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:19:08,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:19:08,803 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:19:08,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400149861] [2020-10-29 08:19:08,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:19:08,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:19:08,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381203023] [2020-10-29 08:19:08,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:19:08,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:19:08,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:19:08,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:19:08,811 INFO L87 Difference]: Start difference. First operand 1003 states and 1543 transitions. Second operand 7 states. [2020-10-29 08:19:22,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:19:22,020 INFO L93 Difference]: Finished difference Result 2964 states and 4573 transitions. [2020-10-29 08:19:22,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:19:22,021 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-10-29 08:19:22,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:19:22,037 INFO L225 Difference]: With dead ends: 2964 [2020-10-29 08:19:22,037 INFO L226 Difference]: Without dead ends: 1967 [2020-10-29 08:19:22,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:19:22,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2020-10-29 08:19:22,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1915. [2020-10-29 08:19:22,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1915 states. [2020-10-29 08:19:22,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 2483 transitions. [2020-10-29 08:19:22,136 INFO L78 Accepts]: Start accepts. Automaton has 1915 states and 2483 transitions. Word has length 94 [2020-10-29 08:19:22,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:19:22,137 INFO L481 AbstractCegarLoop]: Abstraction has 1915 states and 2483 transitions. [2020-10-29 08:19:22,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:19:22,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states and 2483 transitions. [2020-10-29 08:19:22,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-29 08:19:22,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:19:22,147 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 08:19:22,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:19:22,148 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:19:22,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:19:22,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1533553473, now seen corresponding path program 1 times [2020-10-29 08:19:22,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:19:22,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844047900] [2020-10-29 08:19:22,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:19:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:22,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:22,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:22,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 08:19:22,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:19:22,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 693 [2020-10-29 08:19:22,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:22,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:22,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:19:22,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:19:22,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 08:19:22,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:19:23,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:19:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:23,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:23,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:23,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:19:23,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:19:23,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 08:19:23,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:23,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:23,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:19:23,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:19:23,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:19:23,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:19:23,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:19:23,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:23,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:23,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:23,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 08:19:23,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:19:23,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-29 08:19:23,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:23,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:23,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:19:23,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:19:23,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 08:19:23,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:19:23,469 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:19:23,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844047900] [2020-10-29 08:19:23,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:19:23,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:19:23,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264929634] [2020-10-29 08:19:23,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:19:23,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:19:23,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:19:23,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:19:23,473 INFO L87 Difference]: Start difference. First operand 1915 states and 2483 transitions. Second operand 8 states. [2020-10-29 08:19:27,452 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-10-29 08:19:39,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:19:39,279 INFO L93 Difference]: Finished difference Result 6169 states and 7938 transitions. [2020-10-29 08:19:39,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 08:19:39,285 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 97 [2020-10-29 08:19:39,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:19:39,304 INFO L225 Difference]: With dead ends: 6169 [2020-10-29 08:19:39,305 INFO L226 Difference]: Without dead ends: 3368 [2020-10-29 08:19:39,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:19:39,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3368 states. [2020-10-29 08:19:39,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3368 to 3300. [2020-10-29 08:19:39,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3300 states. [2020-10-29 08:19:39,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3300 states to 3300 states and 4042 transitions. [2020-10-29 08:19:39,417 INFO L78 Accepts]: Start accepts. Automaton has 3300 states and 4042 transitions. Word has length 97 [2020-10-29 08:19:39,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:19:39,417 INFO L481 AbstractCegarLoop]: Abstraction has 3300 states and 4042 transitions. [2020-10-29 08:19:39,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:19:39,418 INFO L276 IsEmpty]: Start isEmpty. Operand 3300 states and 4042 transitions. [2020-10-29 08:19:39,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-29 08:19:39,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:19:39,420 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 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 08:19:39,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:19:39,421 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:19:39,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:19:39,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1095742186, now seen corresponding path program 1 times [2020-10-29 08:19:39,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:19:39,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374753224] [2020-10-29 08:19:39,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:19:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:39,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:39,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:40,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:40,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 08:19:40,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:19:40,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1059 [2020-10-29 08:19:40,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:40,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:40,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:19:40,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:19:40,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 08:19:40,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:19:40,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:19:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:40,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:40,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:40,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:19:40,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:19:40,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:19:40,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:40,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:40,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:19:40,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:19:40,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:19:40,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:19:40,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:19:40,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:40,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:40,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:40,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:19:40,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:19:40,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 08:19:40,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:40,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:40,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:19:40,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:19:40,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:19:40,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:19:40,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:19:40,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:40,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:41,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:41,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 08:19:41,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:19:41,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 08:19:41,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:41,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:41,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:19:41,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:19:41,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 08:19:41,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:19:41,169 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:19:41,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374753224] [2020-10-29 08:19:41,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:19:41,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:19:41,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940238104] [2020-10-29 08:19:41,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:19:41,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:19:41,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:19:41,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:19:41,172 INFO L87 Difference]: Start difference. First operand 3300 states and 4042 transitions. Second operand 7 states. [2020-10-29 08:19:53,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:19:53,187 INFO L93 Difference]: Finished difference Result 8020 states and 10330 transitions. [2020-10-29 08:19:53,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:19:53,188 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 180 [2020-10-29 08:19:53,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:19:53,217 INFO L225 Difference]: With dead ends: 8020 [2020-10-29 08:19:53,218 INFO L226 Difference]: Without dead ends: 5158 [2020-10-29 08:19:53,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:19:53,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5158 states. [2020-10-29 08:19:53,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5158 to 5143. [2020-10-29 08:19:53,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5143 states. [2020-10-29 08:19:53,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 6305 transitions. [2020-10-29 08:19:53,371 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 6305 transitions. Word has length 180 [2020-10-29 08:19:53,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:19:53,372 INFO L481 AbstractCegarLoop]: Abstraction has 5143 states and 6305 transitions. [2020-10-29 08:19:53,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:19:53,372 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 6305 transitions. [2020-10-29 08:19:53,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-29 08:19:53,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:19:53,375 INFO L422 BasicCegarLoop]: trace histogram [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, 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 08:19:53,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:19:53,375 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:19:53,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:19:53,376 INFO L82 PathProgramCache]: Analyzing trace with hash 534924627, now seen corresponding path program 1 times [2020-10-29 08:19:53,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:19:53,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934808817] [2020-10-29 08:19:53,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:19:53,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:53,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:53,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:55,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:56,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:58,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:58,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-29 08:19:58,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:19:58,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4664 [2020-10-29 08:19:58,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:58,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:58,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:19:58,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:19:58,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-29 08:19:58,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:19:58,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:19:58,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:58,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:58,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:58,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:19:58,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:19:58,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 08:19:58,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:58,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:58,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:19:58,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:19:58,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:19:58,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:19:58,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:19:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:58,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:58,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:58,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:19:58,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:19:58,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-29 08:19:58,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:58,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:58,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:19:58,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:19:58,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:19:58,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:19:58,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:19:58,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:58,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:58,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:58,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:19:58,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:19:58,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-29 08:19:58,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:58,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:58,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:19:58,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:19:58,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:19:58,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:19:58,955 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-29 08:19:58,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934808817] [2020-10-29 08:19:58,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:19:58,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:19:58,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126975002] [2020-10-29 08:19:58,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 08:19:58,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:19:58,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 08:19:58,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-29 08:19:58,959 INFO L87 Difference]: Start difference. First operand 5143 states and 6305 transitions. Second operand 9 states. [2020-10-29 08:20:26,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:20:26,446 INFO L93 Difference]: Finished difference Result 16489 states and 21516 transitions. [2020-10-29 08:20:26,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 08:20:26,448 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 185 [2020-10-29 08:20:26,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:20:26,503 INFO L225 Difference]: With dead ends: 16489 [2020-10-29 08:20:26,504 INFO L226 Difference]: Without dead ends: 11302 [2020-10-29 08:20:26,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2020-10-29 08:20:26,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11302 states. [2020-10-29 08:20:26,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11302 to 11180. [2020-10-29 08:20:26,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11180 states. [2020-10-29 08:20:26,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11180 states to 11180 states and 13739 transitions. [2020-10-29 08:20:26,896 INFO L78 Accepts]: Start accepts. Automaton has 11180 states and 13739 transitions. Word has length 185 [2020-10-29 08:20:26,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:20:26,896 INFO L481 AbstractCegarLoop]: Abstraction has 11180 states and 13739 transitions. [2020-10-29 08:20:26,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 08:20:26,897 INFO L276 IsEmpty]: Start isEmpty. Operand 11180 states and 13739 transitions. [2020-10-29 08:20:26,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-29 08:20:26,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:20:26,900 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:20:26,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:20:26,900 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:20:26,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:20:26,901 INFO L82 PathProgramCache]: Analyzing trace with hash 145265181, now seen corresponding path program 1 times [2020-10-29 08:20:26,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:20:26,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919896190] [2020-10-29 08:20:26,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:20:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:26,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:27,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:27,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:31,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:31,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-29 08:20:31,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:20:31,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 08:20:31,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:31,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:31,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:20:31,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:20:31,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 08:20:31,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:20:32,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:20:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:32,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:32,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:32,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:20:32,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:20:32,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:20:32,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:32,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:32,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:20:32,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:20:32,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:20:32,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:20:32,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:20:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:32,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:32,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:32,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:20:32,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:20:32,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 08:20:32,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:32,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:32,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:20:32,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:20:32,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:20:32,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:20:32,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:20:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:32,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:32,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:32,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:32,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:20:32,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:20:32,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-29 08:20:32,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:32,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:32,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:20:32,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:20:32,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:20:32,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:20:32,574 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-29 08:20:32,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919896190] [2020-10-29 08:20:32,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:20:32,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:20:32,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299913568] [2020-10-29 08:20:32,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:20:32,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:20:32,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:20:32,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:20:32,580 INFO L87 Difference]: Start difference. First operand 11180 states and 13739 transitions. Second operand 5 states. [2020-10-29 08:20:43,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:20:43,684 INFO L93 Difference]: Finished difference Result 21939 states and 27061 transitions. [2020-10-29 08:20:43,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:20:43,687 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2020-10-29 08:20:43,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:20:43,728 INFO L225 Difference]: With dead ends: 21939 [2020-10-29 08:20:43,728 INFO L226 Difference]: Without dead ends: 11200 [2020-10-29 08:20:43,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:20:43,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11200 states. [2020-10-29 08:20:43,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11200 to 11180. [2020-10-29 08:20:43,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11180 states. [2020-10-29 08:20:44,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11180 states to 11180 states and 13708 transitions. [2020-10-29 08:20:44,018 INFO L78 Accepts]: Start accepts. Automaton has 11180 states and 13708 transitions. Word has length 196 [2020-10-29 08:20:44,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:20:44,019 INFO L481 AbstractCegarLoop]: Abstraction has 11180 states and 13708 transitions. [2020-10-29 08:20:44,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:20:44,020 INFO L276 IsEmpty]: Start isEmpty. Operand 11180 states and 13708 transitions. [2020-10-29 08:20:44,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-29 08:20:44,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:20:44,026 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:20:44,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:20:44,026 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:20:44,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:20:44,027 INFO L82 PathProgramCache]: Analyzing trace with hash -2090634048, now seen corresponding path program 1 times [2020-10-29 08:20:44,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:20:44,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728349031] [2020-10-29 08:20:44,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:20:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:44,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:44,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:45,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:45,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:46,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:48,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:49,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:49,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 08:20:49,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 08:20:49,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-29 08:20:49,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:49,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:49,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 08:20:49,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:20:49,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-29 08:20:49,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:20:49,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:20:49,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:49,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:49,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:49,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:20:49,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:20:49,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 08:20:49,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:49,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:49,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:20:49,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:20:49,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:20:49,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:20:49,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:20:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:49,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:49,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:49,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:20:49,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:20:49,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-29 08:20:49,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:49,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:49,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:20:49,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:20:49,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:20:49,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:20:49,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:20:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:49,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:49,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:49,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:20:49,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:20:49,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-29 08:20:49,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:49,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:49,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:20:49,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:20:49,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 08:20:49,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:20:49,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-29 08:20:49,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:49,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:50,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:50,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:20:50,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:20:50,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-29 08:20:50,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:50,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:50,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:20:50,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:20:50,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:20:50,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:20:50,264 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 126 proven. 80 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-29 08:20:50,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728349031] [2020-10-29 08:20:50,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:20:50,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 08:20:50,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274612096] [2020-10-29 08:20:50,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 08:20:50,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:20:50,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 08:20:50,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:20:50,268 INFO L87 Difference]: Start difference. First operand 11180 states and 13708 transitions. Second operand 10 states. [2020-10-29 08:20:50,457 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-29 08:21:16,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:21:16,237 INFO L93 Difference]: Finished difference Result 28497 states and 38021 transitions. [2020-10-29 08:21:16,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 08:21:16,239 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 271 [2020-10-29 08:21:16,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:21:16,319 INFO L225 Difference]: With dead ends: 28497 [2020-10-29 08:21:16,319 INFO L226 Difference]: Without dead ends: 17309 [2020-10-29 08:21:16,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2020-10-29 08:21:16,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17309 states. [2020-10-29 08:21:16,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17309 to 13883. [2020-10-29 08:21:16,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13883 states. [2020-10-29 08:21:16,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13883 states to 13883 states and 16842 transitions. [2020-10-29 08:21:16,889 INFO L78 Accepts]: Start accepts. Automaton has 13883 states and 16842 transitions. Word has length 271 [2020-10-29 08:21:16,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:21:16,890 INFO L481 AbstractCegarLoop]: Abstraction has 13883 states and 16842 transitions. [2020-10-29 08:21:16,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 08:21:16,890 INFO L276 IsEmpty]: Start isEmpty. Operand 13883 states and 16842 transitions. [2020-10-29 08:21:16,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-29 08:21:16,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:21:16,897 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:21:16,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:21:16,897 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:21:16,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:21:16,898 INFO L82 PathProgramCache]: Analyzing trace with hash 300407140, now seen corresponding path program 1 times [2020-10-29 08:21:16,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:21:16,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134988117] [2020-10-29 08:21:16,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:21:16,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:17,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:17,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:17,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:19,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:19,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-29 08:21:19,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:21:19,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2966 [2020-10-29 08:21:19,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:19,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:19,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:21:19,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:21:19,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-29 08:21:19,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:21:20,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:21:20,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:20,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:20,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:20,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:21:20,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:21:20,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:21:20,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:20,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:20,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:21:20,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:21:20,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:21:20,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:21:20,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:21:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:20,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:20,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:20,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:21:20,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:21:20,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-29 08:21:20,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:20,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:20,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:21:20,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:21:20,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:21:20,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:21:20,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:21:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:20,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:20,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:20,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:20,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:21:20,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:21:20,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-29 08:21:20,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:20,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:20,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:21:20,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:21:20,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:21:20,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:21:20,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-29 08:21:20,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:20,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:20,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:20,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 08:21:20,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:21:20,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-29 08:21:20,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:20,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:20,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:21:20,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:21:20,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 08:21:20,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:21:20,917 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 193 proven. 8 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-29 08:21:20,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134988117] [2020-10-29 08:21:20,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:21:20,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:21:20,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470800817] [2020-10-29 08:21:20,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:21:20,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:21:20,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:21:20,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:21:20,922 INFO L87 Difference]: Start difference. First operand 13883 states and 16842 transitions. Second operand 8 states. [2020-10-29 08:21:36,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:21:36,735 INFO L93 Difference]: Finished difference Result 28213 states and 34745 transitions. [2020-10-29 08:21:36,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:21:36,737 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 273 [2020-10-29 08:21:36,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:21:36,783 INFO L225 Difference]: With dead ends: 28213 [2020-10-29 08:21:36,783 INFO L226 Difference]: Without dead ends: 14771 [2020-10-29 08:21:36,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:21:36,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14771 states. [2020-10-29 08:21:37,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14771 to 13885. [2020-10-29 08:21:37,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13885 states. [2020-10-29 08:21:37,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13885 states to 13885 states and 16845 transitions. [2020-10-29 08:21:37,194 INFO L78 Accepts]: Start accepts. Automaton has 13885 states and 16845 transitions. Word has length 273 [2020-10-29 08:21:37,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:21:37,194 INFO L481 AbstractCegarLoop]: Abstraction has 13885 states and 16845 transitions. [2020-10-29 08:21:37,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:21:37,195 INFO L276 IsEmpty]: Start isEmpty. Operand 13885 states and 16845 transitions. [2020-10-29 08:21:37,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-10-29 08:21:37,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:21:37,200 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:21:37,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:21:37,201 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:21:37,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:21:37,202 INFO L82 PathProgramCache]: Analyzing trace with hash -982232637, now seen corresponding path program 1 times [2020-10-29 08:21:37,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:21:37,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314137164] [2020-10-29 08:21:37,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:21:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:37,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:37,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:37,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:39,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:42,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:42,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-29 08:21:42,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:21:42,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 08:21:42,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:42,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:42,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:21:42,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 206 [2020-10-29 08:21:42,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 08:21:42,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:21:42,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:21:42,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:42,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:42,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:42,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:21:42,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:21:42,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:21:42,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:42,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:42,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:21:42,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:21:42,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:21:42,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:21:42,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:21:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:42,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:42,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:42,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:21:42,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:21:42,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 08:21:42,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:42,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:42,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:21:42,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:21:42,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:21:42,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:21:42,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:21:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:42,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:42,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:42,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 08:21:42,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:21:42,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-29 08:21:42,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:42,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:42,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:21:42,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:21:42,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 08:21:42,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:21:42,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-29 08:21:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:42,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:42,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:42,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:21:42,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:21:42,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-29 08:21:42,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:42,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:42,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:21:42,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:21:42,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:21:42,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:21:42,982 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-29 08:21:42,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314137164] [2020-10-29 08:21:42,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:21:42,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:21:42,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487326155] [2020-10-29 08:21:42,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:21:42,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:21:42,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:21:42,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:21:42,985 INFO L87 Difference]: Start difference. First operand 13885 states and 16845 transitions. Second operand 7 states. [2020-10-29 08:21:59,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:21:59,952 INFO L93 Difference]: Finished difference Result 34088 states and 41868 transitions. [2020-10-29 08:21:59,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:21:59,954 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 292 [2020-10-29 08:21:59,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:22:00,008 INFO L225 Difference]: With dead ends: 34088 [2020-10-29 08:22:00,008 INFO L226 Difference]: Without dead ends: 20185 [2020-10-29 08:22:00,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 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 08:22:00,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20185 states. [2020-10-29 08:22:00,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20185 to 19690. [2020-10-29 08:22:00,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19690 states. [2020-10-29 08:22:00,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19690 states to 19690 states and 24121 transitions. [2020-10-29 08:22:00,451 INFO L78 Accepts]: Start accepts. Automaton has 19690 states and 24121 transitions. Word has length 292 [2020-10-29 08:22:00,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:22:00,452 INFO L481 AbstractCegarLoop]: Abstraction has 19690 states and 24121 transitions. [2020-10-29 08:22:00,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:22:00,452 INFO L276 IsEmpty]: Start isEmpty. Operand 19690 states and 24121 transitions. [2020-10-29 08:22:00,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-29 08:22:00,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:22:00,458 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:22:00,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 08:22:00,458 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:22:00,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:22:00,459 INFO L82 PathProgramCache]: Analyzing trace with hash 265571967, now seen corresponding path program 1 times [2020-10-29 08:22:00,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:22:00,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619821738] [2020-10-29 08:22:00,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:22:00,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:00,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:00,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:00,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:02,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:05,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:05,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:22:05,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:22:05,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4691 [2020-10-29 08:22:05,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:05,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:05,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:22:05,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:22:05,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 08:22:05,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:22:05,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:22:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:05,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:05,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:05,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:22:05,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:05,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:22:05,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:05,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:05,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:22:05,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:22:05,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:22:05,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:22:05,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:22:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:05,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:05,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:05,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:22:05,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:05,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 08:22:05,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:05,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:05,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:22:05,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:22:05,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:22:05,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:22:05,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:22:05,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:05,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:05,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:05,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 08:22:05,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:05,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-29 08:22:05,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:05,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:05,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:22:05,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:22:05,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 08:22:05,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:22:05,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-29 08:22:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:05,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:05,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:05,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:22:05,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:05,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 08:22:05,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:05,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:05,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:22:05,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-29 08:22:05,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:22:05,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:22:06,066 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 133 proven. 74 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-29 08:22:06,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619821738] [2020-10-29 08:22:06,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:22:06,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:22:06,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184763418] [2020-10-29 08:22:06,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:22:06,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:22:06,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:22:06,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:22:06,068 INFO L87 Difference]: Start difference. First operand 19690 states and 24121 transitions. Second operand 7 states. [2020-10-29 08:22:12,886 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-29 08:22:23,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:22:23,505 INFO L93 Difference]: Finished difference Result 43141 states and 53783 transitions. [2020-10-29 08:22:23,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:22:23,508 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 294 [2020-10-29 08:22:23,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:22:23,569 INFO L225 Difference]: With dead ends: 43141 [2020-10-29 08:22:23,570 INFO L226 Difference]: Without dead ends: 24325 [2020-10-29 08:22:23,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:22:23,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24325 states. [2020-10-29 08:22:24,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24325 to 23363. [2020-10-29 08:22:24,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23363 states. [2020-10-29 08:22:24,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23363 states to 23363 states and 28503 transitions. [2020-10-29 08:22:24,096 INFO L78 Accepts]: Start accepts. Automaton has 23363 states and 28503 transitions. Word has length 294 [2020-10-29 08:22:24,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:22:24,097 INFO L481 AbstractCegarLoop]: Abstraction has 23363 states and 28503 transitions. [2020-10-29 08:22:24,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:22:24,097 INFO L276 IsEmpty]: Start isEmpty. Operand 23363 states and 28503 transitions. [2020-10-29 08:22:24,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-29 08:22:24,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:22:24,105 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:22:24,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 08:22:24,105 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:22:24,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:22:24,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1093124195, now seen corresponding path program 1 times [2020-10-29 08:22:24,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:22:24,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379316633] [2020-10-29 08:22:24,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:22:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:24,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:24,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:25,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking...