/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/Problem18_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:27:53,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:27:53,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:27:53,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:27:53,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:27:53,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:27:53,519 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:27:53,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:27:53,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:27:53,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:27:53,527 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:27:53,529 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:27:53,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:27:53,531 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:27:53,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:27:53,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:27:53,535 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:27:53,537 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:27:53,539 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:27:53,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:27:53,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:27:53,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:27:53,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:27:53,580 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:27:53,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:27:53,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:27:53,584 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:27:53,585 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:27:53,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:27:53,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:27:53,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:27:53,596 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:27:53,597 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:27:53,598 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:27:53,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:27:53,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:27:53,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:27:53,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:27:53,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:27:53,611 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:27:53,612 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:27:53,614 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 08:27:53,669 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:27:53,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:27:53,673 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:27:53,673 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:27:53,674 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:27:53,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:27:53,675 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:27:53,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:27:53,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:27:53,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:27:53,677 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:27:53,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:27:53,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:27:53,678 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:27:53,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:27:53,678 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:27:53,678 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:27:53,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:27:53,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:27:53,679 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:27:53,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:27:53,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:27:53,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:27:53,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:27:53,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:27:53,681 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:27:53,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:27:53,681 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:27:53,681 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:27:53,681 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:27:54,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:27:54,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:27:54,101 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:27:54,103 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:27:54,103 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:27:54,105 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label08.c [2020-10-29 08:27:54,183 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ef725111/3f7b9f23234047ebab9968babad42833/FLAGcfc38141c [2020-10-29 08:27:55,155 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:27:55,156 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label08.c [2020-10-29 08:27:55,199 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ef725111/3f7b9f23234047ebab9968babad42833/FLAGcfc38141c [2020-10-29 08:27:55,634 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ef725111/3f7b9f23234047ebab9968babad42833 [2020-10-29 08:27:55,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:27:55,644 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:27:55,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:27:55,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:27:55,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:27:55,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:27:55" (1/1) ... [2020-10-29 08:27:55,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29d25613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:27:55, skipping insertion in model container [2020-10-29 08:27:55,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:27:55" (1/1) ... [2020-10-29 08:27:55,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:27:55,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:27:57,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:27:57,108 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:27:57,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:27:57,822 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:27:57,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:27:57 WrapperNode [2020-10-29 08:27:57,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:27:57,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:27:57,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:27:57,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:27:57,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:27:57" (1/1) ... [2020-10-29 08:27:57,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:27:57" (1/1) ... [2020-10-29 08:27:57,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:27:57" (1/1) ... [2020-10-29 08:27:57,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:27:57" (1/1) ... [2020-10-29 08:27:58,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:27:57" (1/1) ... [2020-10-29 08:27:58,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:27:57" (1/1) ... [2020-10-29 08:27:58,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:27:57" (1/1) ... [2020-10-29 08:27:58,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:27:58,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:27:58,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:27:58,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:27:58,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:27:57" (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 08:27:58,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:27:58,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:27:58,224 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:27:58,224 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:27:58,224 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:27:58,225 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 08:27:58,225 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:27:58,225 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:27:58,225 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:27:58,225 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 08:27:58,225 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:27:58,226 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:27:58,226 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:27:58,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:27:58,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:27:58,226 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:27:58,226 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:27:58,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:27:58,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:27:58,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:27:58,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:27:58,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:27:58,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:28:03,056 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:28:03,057 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:28:03,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:28:03 BoogieIcfgContainer [2020-10-29 08:28:03,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:28:03,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:28:03,069 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:28:03,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:28:03,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:27:55" (1/3) ... [2020-10-29 08:28:03,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bc0bfd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:28:03, skipping insertion in model container [2020-10-29 08:28:03,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:27:57" (2/3) ... [2020-10-29 08:28:03,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bc0bfd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:28:03, skipping insertion in model container [2020-10-29 08:28:03,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:28:03" (3/3) ... [2020-10-29 08:28:03,078 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label08.c [2020-10-29 08:28:03,096 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:28:03,102 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:28:03,118 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:28:03,169 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:28:03,170 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:28:03,170 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:28:03,170 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:28:03,170 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:28:03,170 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:28:03,170 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:28:03,171 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:28:03,222 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-29 08:28:03,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 08:28:03,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:28:03,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:28:03,233 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:28:03,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:28:03,241 INFO L82 PathProgramCache]: Analyzing trace with hash -924456968, now seen corresponding path program 1 times [2020-10-29 08:28:03,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:28:03,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97948957] [2020-10-29 08:28:03,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:28:03,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:03,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:03,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:03,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 08:28:03,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:28:03,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-10-29 08:28:03,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:03,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:03,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:28:03,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:28:03,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 08:28:03,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:28:04,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:28:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:04,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:04,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:04,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:28:04,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:28:04,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 08:28:04,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:04,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:04,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:28:04,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:28:04,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:28:04,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:28:04,223 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 08:28:04,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97948957] [2020-10-29 08:28:04,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:28:04,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 08:28:04,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480298313] [2020-10-29 08:28:04,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:28:04,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:28:04,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:28:04,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:28:04,259 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-29 08:28:15,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:28:15,953 INFO L93 Difference]: Finished difference Result 2989 states and 5773 transitions. [2020-10-29 08:28:15,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:28:15,955 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-10-29 08:28:15,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:28:16,009 INFO L225 Difference]: With dead ends: 2989 [2020-10-29 08:28:16,009 INFO L226 Difference]: Without dead ends: 2143 [2020-10-29 08:28:16,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:28:16,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-29 08:28:16,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2136. [2020-10-29 08:28:16,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-29 08:28:16,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3564 transitions. [2020-10-29 08:28:16,266 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3564 transitions. Word has length 28 [2020-10-29 08:28:16,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:28:16,268 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3564 transitions. [2020-10-29 08:28:16,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:28:16,268 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3564 transitions. [2020-10-29 08:28:16,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-29 08:28:16,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:28:16,279 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:28:16,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:28:16,279 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:28:16,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:28:16,281 INFO L82 PathProgramCache]: Analyzing trace with hash -34524000, now seen corresponding path program 1 times [2020-10-29 08:28:16,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:28:16,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84146027] [2020-10-29 08:28:16,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:28:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:16,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:16,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:17,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:17,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 08:28:17,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:28:17,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 948 [2020-10-29 08:28:17,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:17,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:17,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:28:17,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:28:17,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:28:17,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:28:17,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:28:17,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:17,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:17,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:17,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:28:17,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:28:17,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 08:28:17,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:17,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:17,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:28:17,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:28:17,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:28:17,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:28:17,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:28:17,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:17,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:17,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:17,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 08:28:17,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:28:17,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-29 08:28:17,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:17,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:17,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:28:17,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:28:17,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 08:28:17,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:28:17,744 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:28:17,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84146027] [2020-10-29 08:28:17,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:28:17,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:28:17,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19171967] [2020-10-29 08:28:17,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:28:17,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:28:17,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:28:17,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:28:17,753 INFO L87 Difference]: Start difference. First operand 2136 states and 3564 transitions. Second operand 7 states. [2020-10-29 08:28:27,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:28:27,840 INFO L93 Difference]: Finished difference Result 6471 states and 10885 transitions. [2020-10-29 08:28:27,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:28:27,843 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-10-29 08:28:27,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:28:27,873 INFO L225 Difference]: With dead ends: 6471 [2020-10-29 08:28:27,873 INFO L226 Difference]: Without dead ends: 4341 [2020-10-29 08:28:27,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:28:27,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4341 states. [2020-10-29 08:28:28,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4341 to 3588. [2020-10-29 08:28:28,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3588 states. [2020-10-29 08:28:28,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3588 states to 3588 states and 5289 transitions. [2020-10-29 08:28:28,023 INFO L78 Accepts]: Start accepts. Automaton has 3588 states and 5289 transitions. Word has length 98 [2020-10-29 08:28:28,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:28:28,024 INFO L481 AbstractCegarLoop]: Abstraction has 3588 states and 5289 transitions. [2020-10-29 08:28:28,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:28:28,024 INFO L276 IsEmpty]: Start isEmpty. Operand 3588 states and 5289 transitions. [2020-10-29 08:28:28,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 08:28:28,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:28:28,027 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:28:28,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:28:28,027 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:28:28,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:28:28,028 INFO L82 PathProgramCache]: Analyzing trace with hash 119130122, now seen corresponding path program 1 times [2020-10-29 08:28:28,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:28:28,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736970587] [2020-10-29 08:28:28,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:28:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:28,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:28,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:28,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:28,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 08:28:28,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:28:28,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 698 [2020-10-29 08:28:28,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:28,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:28,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:28:28,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:28:28,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:28:28,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:28:28,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:28:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:28,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:28,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:28,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:28:28,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:28:28,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 08:28:28,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:28,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:28,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:28:28,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:28:28,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:28:28,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:28:28,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:28:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:28,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:29,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:29,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:28:29,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:28:29,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-29 08:28:29,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:29,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:29,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:28:29,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:28:29,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:28:29,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:28:29,206 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:28:29,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736970587] [2020-10-29 08:28:29,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:28:29,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:28:29,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928097668] [2020-10-29 08:28:29,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:28:29,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:28:29,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:28:29,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:28:29,213 INFO L87 Difference]: Start difference. First operand 3588 states and 5289 transitions. Second operand 7 states. [2020-10-29 08:28:38,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:28:38,295 INFO L93 Difference]: Finished difference Result 8698 states and 12644 transitions. [2020-10-29 08:28:38,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:28:38,297 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 103 [2020-10-29 08:28:38,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:28:38,331 INFO L225 Difference]: With dead ends: 8698 [2020-10-29 08:28:38,331 INFO L226 Difference]: Without dead ends: 5116 [2020-10-29 08:28:38,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:28:38,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5116 states. [2020-10-29 08:28:38,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5116 to 5094. [2020-10-29 08:28:38,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5094 states. [2020-10-29 08:28:38,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5094 states to 5094 states and 7137 transitions. [2020-10-29 08:28:38,502 INFO L78 Accepts]: Start accepts. Automaton has 5094 states and 7137 transitions. Word has length 103 [2020-10-29 08:28:38,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:28:38,503 INFO L481 AbstractCegarLoop]: Abstraction has 5094 states and 7137 transitions. [2020-10-29 08:28:38,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:28:38,503 INFO L276 IsEmpty]: Start isEmpty. Operand 5094 states and 7137 transitions. [2020-10-29 08:28:38,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-29 08:28:38,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:28:38,506 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:28:38,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:28:38,507 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:28:38,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:28:38,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1472985314, now seen corresponding path program 1 times [2020-10-29 08:28:38,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:28:38,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294455508] [2020-10-29 08:28:38,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:28:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:38,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:38,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:39,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:39,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 08:28:39,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:28:39,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1395 [2020-10-29 08:28:39,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:39,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:39,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:28:39,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:28:39,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 08:28:39,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:28:40,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:28:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:40,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:40,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:40,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:28:40,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:28:40,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 08:28:40,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:40,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:40,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:28:40,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:28:40,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:28:40,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:28:40,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:28:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:40,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:40,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:40,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 08:28:40,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:28:40,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-29 08:28:40,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:40,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:40,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:28:40,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:28:40,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 08:28:40,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:28:40,613 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:28:40,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294455508] [2020-10-29 08:28:40,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:28:40,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:28:40,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633676536] [2020-10-29 08:28:40,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:28:40,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:28:40,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:28:40,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:28:40,623 INFO L87 Difference]: Start difference. First operand 5094 states and 7137 transitions. Second operand 7 states. [2020-10-29 08:28:50,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:28:50,029 INFO L93 Difference]: Finished difference Result 11004 states and 15283 transitions. [2020-10-29 08:28:50,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:28:50,030 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 125 [2020-10-29 08:28:50,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:28:50,065 INFO L225 Difference]: With dead ends: 11004 [2020-10-29 08:28:50,065 INFO L226 Difference]: Without dead ends: 5916 [2020-10-29 08:28:50,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:28:50,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5916 states. [2020-10-29 08:28:50,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5916 to 5811. [2020-10-29 08:28:50,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5811 states. [2020-10-29 08:28:50,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5811 states to 5811 states and 7902 transitions. [2020-10-29 08:28:50,289 INFO L78 Accepts]: Start accepts. Automaton has 5811 states and 7902 transitions. Word has length 125 [2020-10-29 08:28:50,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:28:50,291 INFO L481 AbstractCegarLoop]: Abstraction has 5811 states and 7902 transitions. [2020-10-29 08:28:50,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:28:50,291 INFO L276 IsEmpty]: Start isEmpty. Operand 5811 states and 7902 transitions. [2020-10-29 08:28:50,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-29 08:28:50,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:28:50,302 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:28:50,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:28:50,302 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:28:50,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:28:50,303 INFO L82 PathProgramCache]: Analyzing trace with hash -457637064, now seen corresponding path program 1 times [2020-10-29 08:28:50,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:28:50,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420428476] [2020-10-29 08:28:50,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:28:50,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:50,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:50,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:51,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:51,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-29 08:28:51,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:28:51,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1438 [2020-10-29 08:28:51,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:51,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:51,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:28:51,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:28:51,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 217 [2020-10-29 08:28:51,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:28:51,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:28:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:51,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:51,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:51,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:28:51,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:28:51,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 08:28:51,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:51,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:51,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:28:51,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:28:51,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:28:51,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:28:51,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:28:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:28:52,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:28:52,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:28:52,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-29 08:28:52,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:28:52,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-29 08:28:52,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:28:52,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:28:52,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:28:52,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:28:52,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-29 08:28:52,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:28:52,508 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 08:28:52,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420428476] [2020-10-29 08:28:52,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:28:52,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:28:52,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918133063] [2020-10-29 08:28:52,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 08:28:52,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:28:52,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 08:28:52,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:28:52,512 INFO L87 Difference]: Start difference. First operand 5811 states and 7902 transitions. Second operand 6 states. [2020-10-29 08:29:02,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:29:02,921 INFO L93 Difference]: Finished difference Result 16146 states and 22878 transitions. [2020-10-29 08:29:02,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:29:02,922 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 214 [2020-10-29 08:29:02,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:29:02,978 INFO L225 Difference]: With dead ends: 16146 [2020-10-29 08:29:02,978 INFO L226 Difference]: Without dead ends: 11043 [2020-10-29 08:29:02,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:29:03,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11043 states. [2020-10-29 08:29:03,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11043 to 10249. [2020-10-29 08:29:03,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10249 states. [2020-10-29 08:29:03,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10249 states to 10249 states and 13248 transitions. [2020-10-29 08:29:03,324 INFO L78 Accepts]: Start accepts. Automaton has 10249 states and 13248 transitions. Word has length 214 [2020-10-29 08:29:03,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:29:03,325 INFO L481 AbstractCegarLoop]: Abstraction has 10249 states and 13248 transitions. [2020-10-29 08:29:03,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 08:29:03,325 INFO L276 IsEmpty]: Start isEmpty. Operand 10249 states and 13248 transitions. [2020-10-29 08:29:03,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-10-29 08:29:03,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:29:03,336 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:29:03,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:29:03,336 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:29:03,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:29:03,337 INFO L82 PathProgramCache]: Analyzing trace with hash 489952078, now seen corresponding path program 1 times [2020-10-29 08:29:03,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:29:03,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021898285] [2020-10-29 08:29:03,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:29:03,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:03,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:03,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:04,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:04,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:07,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:07,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 425 [2020-10-29 08:29:07,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:29:07,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3837 [2020-10-29 08:29:07,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:07,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:07,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:29:07,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-29 08:29:07,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 08:29:07,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:29:07,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:29:07,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:07,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:07,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:07,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:29:07,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:07,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 08:29:07,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:07,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:07,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:29:07,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:29:07,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:29:07,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:29:07,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:29:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:07,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:07,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:07,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-29 08:29:07,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:07,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-29 08:29:07,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:07,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:07,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:29:07,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:29:07,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-29 08:29:07,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:29:07,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-29 08:29:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:07,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:08,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:08,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:29:08,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:08,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-29 08:29:08,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:08,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:08,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:29:08,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:29:08,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-29 08:29:08,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:29:08,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-29 08:29:08,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:08,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:08,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:08,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 08:29:08,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:08,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 08:29:08,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:08,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:08,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:29:08,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 08:29:08,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:29:08,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:29:08,822 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 183 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-29 08:29:08,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021898285] [2020-10-29 08:29:08,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:29:08,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:29:08,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441918991] [2020-10-29 08:29:08,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:29:08,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:29:08,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:29:08,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:29:08,828 INFO L87 Difference]: Start difference. First operand 10249 states and 13248 transitions. Second operand 8 states. [2020-10-29 08:29:24,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:29:24,502 INFO L93 Difference]: Finished difference Result 21969 states and 28265 transitions. [2020-10-29 08:29:24,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 08:29:24,504 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 409 [2020-10-29 08:29:24,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:29:24,554 INFO L225 Difference]: With dead ends: 21969 [2020-10-29 08:29:24,554 INFO L226 Difference]: Without dead ends: 10206 [2020-10-29 08:29:24,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 08:29:24,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10206 states. [2020-10-29 08:29:24,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10206 to 10160. [2020-10-29 08:29:24,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10160 states. [2020-10-29 08:29:24,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10160 states to 10160 states and 11056 transitions. [2020-10-29 08:29:24,822 INFO L78 Accepts]: Start accepts. Automaton has 10160 states and 11056 transitions. Word has length 409 [2020-10-29 08:29:24,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:29:24,823 INFO L481 AbstractCegarLoop]: Abstraction has 10160 states and 11056 transitions. [2020-10-29 08:29:24,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:29:24,823 INFO L276 IsEmpty]: Start isEmpty. Operand 10160 states and 11056 transitions. [2020-10-29 08:29:24,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2020-10-29 08:29:24,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:29:24,834 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:29:24,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:29:24,835 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:29:24,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:29:24,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1315236818, now seen corresponding path program 1 times [2020-10-29 08:29:24,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:29:24,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343709930] [2020-10-29 08:29:24,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:29:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:25,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:25,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:25,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:29,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:29,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 448 [2020-10-29 08:29:29,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:29:29,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 08:29:29,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:29,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:29,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:29:29,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:29:29,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-29 08:29:29,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:29:30,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:29:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:30,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:30,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:30,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:29:30,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:30,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 08:29:30,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:30,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:30,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:29:30,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:29:30,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:29:30,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:29:30,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:29:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:30,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:31,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:31,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:29:31,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:31,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 713 [2020-10-29 08:29:31,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:31,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:31,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:29:31,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:29:31,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-29 08:29:31,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:29:31,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:29:31,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:31,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:31,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:31,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:29:31,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:31,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-29 08:29:31,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:31,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:31,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:29:31,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:29:31,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 08:29:31,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:29:31,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-29 08:29:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:31,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:31,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:31,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 08:29:31,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:31,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 08:29:31,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:31,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:31,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:29:31,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-29 08:29:31,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:29:31,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:29:31,691 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 40 proven. 92 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 08:29:31,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343709930] [2020-10-29 08:29:31,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:29:31,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:29:31,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695783198] [2020-10-29 08:29:31,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:29:31,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:29:31,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:29:31,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:29:31,695 INFO L87 Difference]: Start difference. First operand 10160 states and 11056 transitions. Second operand 7 states. [2020-10-29 08:29:42,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:29:42,533 INFO L93 Difference]: Finished difference Result 25657 states and 28447 transitions. [2020-10-29 08:29:42,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:29:42,534 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 432 [2020-10-29 08:29:42,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:29:42,590 INFO L225 Difference]: With dead ends: 25657 [2020-10-29 08:29:42,591 INFO L226 Difference]: Without dead ends: 15487 [2020-10-29 08:29:42,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:29:42,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15487 states. [2020-10-29 08:29:42,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15487 to 15396. [2020-10-29 08:29:42,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15396 states. [2020-10-29 08:29:42,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15396 states to 15396 states and 16790 transitions. [2020-10-29 08:29:42,975 INFO L78 Accepts]: Start accepts. Automaton has 15396 states and 16790 transitions. Word has length 432 [2020-10-29 08:29:42,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:29:42,977 INFO L481 AbstractCegarLoop]: Abstraction has 15396 states and 16790 transitions. [2020-10-29 08:29:42,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:29:42,977 INFO L276 IsEmpty]: Start isEmpty. Operand 15396 states and 16790 transitions. [2020-10-29 08:29:43,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 960 [2020-10-29 08:29:43,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:29:43,018 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:29:43,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:29:43,019 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:29:43,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:29:43,020 INFO L82 PathProgramCache]: Analyzing trace with hash -943852820, now seen corresponding path program 1 times [2020-10-29 08:29:43,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:29:43,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263685166] [2020-10-29 08:29:43,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:29:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:43,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:43,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:48,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:48,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 981 [2020-10-29 08:29:48,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:29:48,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-29 08:29:48,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:48,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:48,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:29:48,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-29 08:29:48,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 08:29:48,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:29:48,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:29:48,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:48,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:48,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:48,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:29:48,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:48,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:29:48,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:48,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:48,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:29:48,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:29:48,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:29:48,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:29:48,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:29:48,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:48,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:48,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:48,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:29:48,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:48,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-29 08:29:48,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:48,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:48,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:29:48,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:29:48,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:29:48,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:29:49,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:29:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:49,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:49,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:49,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:29:49,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:49,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-29 08:29:49,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:49,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:49,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:29:49,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:29:49,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:29:49,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:29:49,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:29:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:49,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:49,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:49,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:29:49,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:49,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:29:49,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:49,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:49,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:29:49,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:29:49,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:29:49,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:29:49,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:29:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:49,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:49,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:49,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:29:49,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:49,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-29 08:29:49,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:49,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:49,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:29:49,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:29:49,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-29 08:29:49,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:29:49,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:29:49,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:49,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:50,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:50,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:29:50,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:50,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 08:29:50,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:50,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:50,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:29:50,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:29:50,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 08:29:50,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:29:50,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-29 08:29:50,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:50,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:50,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:50,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 08:29:50,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:50,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-29 08:29:50,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:50,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:50,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:29:50,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:29:50,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 08:29:50,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:29:51,264 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 256 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-29 08:29:51,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263685166] [2020-10-29 08:29:51,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:29:51,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:29:51,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002018251] [2020-10-29 08:29:51,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:29:51,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:29:51,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:29:51,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:29:51,268 INFO L87 Difference]: Start difference. First operand 15396 states and 16790 transitions. Second operand 7 states. [2020-10-29 08:30:01,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:30:01,881 INFO L93 Difference]: Finished difference Result 32471 states and 35672 transitions. [2020-10-29 08:30:01,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:30:01,882 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 959 [2020-10-29 08:30:01,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:30:01,966 INFO L225 Difference]: With dead ends: 32471 [2020-10-29 08:30:01,966 INFO L226 Difference]: Without dead ends: 18493 [2020-10-29 08:30:02,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:30:02,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18493 states. [2020-10-29 08:30:02,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18493 to 18348. [2020-10-29 08:30:02,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18348 states. [2020-10-29 08:30:02,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18348 states to 18348 states and 19944 transitions. [2020-10-29 08:30:02,538 INFO L78 Accepts]: Start accepts. Automaton has 18348 states and 19944 transitions. Word has length 959 [2020-10-29 08:30:02,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:30:02,541 INFO L481 AbstractCegarLoop]: Abstraction has 18348 states and 19944 transitions. [2020-10-29 08:30:02,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:30:02,541 INFO L276 IsEmpty]: Start isEmpty. Operand 18348 states and 19944 transitions. [2020-10-29 08:30:02,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 967 [2020-10-29 08:30:02,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:30:02,590 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:30:02,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:30:02,590 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:30:02,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:30:02,591 INFO L82 PathProgramCache]: Analyzing trace with hash 503726639, now seen corresponding path program 1 times [2020-10-29 08:30:02,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:30:02,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941977633] [2020-10-29 08:30:02,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:30:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:03,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:03,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:07,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:07,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 988 [2020-10-29 08:30:07,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:30:07,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-29 08:30:07,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:07,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:07,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:30:07,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 856 [2020-10-29 08:30:07,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 08:30:07,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:30:08,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:30:08,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:08,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:08,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:08,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:30:08,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:08,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:30:08,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:08,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:08,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:30:08,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:08,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:30:08,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:30:08,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:30:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:08,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:08,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:08,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:30:08,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:08,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-29 08:30:08,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:08,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:08,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:30:08,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:08,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:30:08,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:30:08,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:30:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:08,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:08,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:08,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:30:08,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:08,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-29 08:30:08,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:08,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:08,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:30:08,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:08,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:30:08,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:30:08,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:30:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:08,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:08,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:08,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:30:08,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:08,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:30:08,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:08,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:08,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:30:08,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:08,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:30:08,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:08,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:30:08,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:09,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:09,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:09,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-29 08:30:09,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:09,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-29 08:30:09,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:09,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:09,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:30:09,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:09,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-10-29 08:30:09,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:09,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:30:09,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:09,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:09,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:09,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 08:30:09,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:09,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 08:30:09,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:09,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:09,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:30:09,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:09,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 08:30:09,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:30:09,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2020-10-29 08:30:09,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:09,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:09,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:09,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 08:30:09,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:09,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-29 08:30:09,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:09,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:09,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:30:09,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:30:09,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 08:30:09,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:10,294 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 256 proven. 2 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2020-10-29 08:30:10,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941977633] [2020-10-29 08:30:10,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:30:10,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:30:10,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040510290] [2020-10-29 08:30:10,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:30:10,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:30:10,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:30:10,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:30:10,297 INFO L87 Difference]: Start difference. First operand 18348 states and 19944 transitions. Second operand 7 states. [2020-10-29 08:30:20,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:30:20,172 INFO L93 Difference]: Finished difference Result 42036 states and 46612 transitions. [2020-10-29 08:30:20,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 08:30:20,173 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 966 [2020-10-29 08:30:20,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:30:20,253 INFO L225 Difference]: With dead ends: 42036 [2020-10-29 08:30:20,253 INFO L226 Difference]: Without dead ends: 25106 [2020-10-29 08:30:20,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:30:20,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25106 states. [2020-10-29 08:30:20,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25106 to 24220. [2020-10-29 08:30:20,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24220 states. [2020-10-29 08:30:20,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24220 states to 24220 states and 26543 transitions. [2020-10-29 08:30:20,844 INFO L78 Accepts]: Start accepts. Automaton has 24220 states and 26543 transitions. Word has length 966 [2020-10-29 08:30:20,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:30:20,847 INFO L481 AbstractCegarLoop]: Abstraction has 24220 states and 26543 transitions. [2020-10-29 08:30:20,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:30:20,847 INFO L276 IsEmpty]: Start isEmpty. Operand 24220 states and 26543 transitions. [2020-10-29 08:30:20,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 981 [2020-10-29 08:30:20,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:30:20,860 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:30:20,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 08:30:20,860 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:30:20,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:30:20,861 INFO L82 PathProgramCache]: Analyzing trace with hash -714156238, now seen corresponding path program 1 times [2020-10-29 08:30:20,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:30:20,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612963906] [2020-10-29 08:30:20,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:30:21,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:21,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:21,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:25,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:25,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1002 [2020-10-29 08:30:25,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:30:25,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4003 [2020-10-29 08:30:25,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:25,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:25,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:30:25,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-29 08:30:25,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 08:30:25,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:25,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:30:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:25,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:25,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:25,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:30:25,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:25,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:30:25,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:25,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:25,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:30:25,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:25,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:30:25,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:25,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:30:25,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:25,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:25,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:25,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:30:25,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:25,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 08:30:25,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:25,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:25,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:30:25,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:25,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:30:25,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:25,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:30:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:25,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:25,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:25,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:30:25,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:25,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-29 08:30:25,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:25,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:25,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:30:25,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:25,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:30:25,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:25,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:30:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:25,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:25,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:25,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:30:25,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:25,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:30:25,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:25,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:25,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:30:25,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:25,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:30:25,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:25,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:30:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:26,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:26,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:26,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:30:26,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:26,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-29 08:30:26,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:26,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:26,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:30:26,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:26,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-29 08:30:26,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:26,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:30:26,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:26,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:26,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:26,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:30:26,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:26,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 08:30:26,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:26,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:26,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:30:26,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:26,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 08:30:26,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:26,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-29 08:30:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:26,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:26,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:26,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 08:30:26,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:26,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 08:30:26,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:26,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:26,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:30:26,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:30:26,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-29 08:30:26,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:27,223 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 298 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-29 08:30:27,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612963906] [2020-10-29 08:30:27,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:30:27,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:30:27,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33776407] [2020-10-29 08:30:27,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:30:27,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:30:27,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:30:27,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:30:27,226 INFO L87 Difference]: Start difference. First operand 24220 states and 26543 transitions. Second operand 7 states. [2020-10-29 08:30:38,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:30:38,123 INFO L93 Difference]: Finished difference Result 54238 states and 60389 transitions. [2020-10-29 08:30:38,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:30:38,124 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 980 [2020-10-29 08:30:38,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:30:38,203 INFO L225 Difference]: With dead ends: 54238 [2020-10-29 08:30:38,203 INFO L226 Difference]: Without dead ends: 31436 [2020-10-29 08:30:38,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 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 08:30:38,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31436 states. [2020-10-29 08:30:38,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31436 to 29207. [2020-10-29 08:30:38,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29207 states. [2020-10-29 08:30:38,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29207 states to 29207 states and 32310 transitions. [2020-10-29 08:30:38,956 INFO L78 Accepts]: Start accepts. Automaton has 29207 states and 32310 transitions. Word has length 980 [2020-10-29 08:30:38,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:30:38,957 INFO L481 AbstractCegarLoop]: Abstraction has 29207 states and 32310 transitions. [2020-10-29 08:30:38,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:30:38,957 INFO L276 IsEmpty]: Start isEmpty. Operand 29207 states and 32310 transitions. [2020-10-29 08:30:38,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1056 [2020-10-29 08:30:38,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:30:38,972 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:30:38,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 08:30:38,973 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:30:38,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:30:38,973 INFO L82 PathProgramCache]: Analyzing trace with hash 145077575, now seen corresponding path program 1 times [2020-10-29 08:30:38,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:30:38,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779173992] [2020-10-29 08:30:38,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:30:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:39,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:39,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:42,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:42,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1077 [2020-10-29 08:30:42,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:30:42,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3202 [2020-10-29 08:30:42,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:42,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:42,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:30:42,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 856 [2020-10-29 08:30:42,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-29 08:30:42,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:42,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:30:42,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:42,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:42,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:42,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:30:42,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:42,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:30:42,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:42,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:42,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:30:42,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:42,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:30:42,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:42,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:30:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:42,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:42,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:42,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:30:42,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:42,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 08:30:42,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:42,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:42,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:30:42,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:42,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:30:42,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:42,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:30:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:42,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:42,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:42,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:30:42,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:42,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 08:30:42,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:42,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:42,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:30:42,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:42,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:30:42,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:43,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:30:43,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:43,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:43,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:43,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:30:43,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:43,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:30:43,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:43,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:43,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:30:43,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:43,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:30:43,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:43,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:30:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:43,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:43,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:43,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-29 08:30:43,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:43,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-29 08:30:43,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:43,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:43,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:30:43,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:43,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-10-29 08:30:43,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:43,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:30:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:43,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:43,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:43,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 08:30:43,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:43,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 08:30:43,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:43,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:43,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:30:43,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:43,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 08:30:43,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:30:43,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2020-10-29 08:30:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:43,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:43,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:43,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-29 08:30:43,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:43,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-29 08:30:43,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:43,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:43,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:30:43,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:30:43,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-29 08:30:43,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:44,930 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 434 proven. 2 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2020-10-29 08:30:44,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779173992] [2020-10-29 08:30:44,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:30:44,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:30:44,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359559860] [2020-10-29 08:30:44,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:30:44,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:30:44,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:30:44,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:30:44,932 INFO L87 Difference]: Start difference. First operand 29207 states and 32310 transitions. Second operand 7 states. [2020-10-29 08:30:59,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:30:59,600 INFO L93 Difference]: Finished difference Result 68391 states and 76787 transitions. [2020-10-29 08:30:59,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:30:59,602 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1055 [2020-10-29 08:30:59,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:30:59,683 INFO L225 Difference]: With dead ends: 68391 [2020-10-29 08:30:59,683 INFO L226 Difference]: Without dead ends: 40602 [2020-10-29 08:30:59,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 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 08:30:59,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40602 states. [2020-10-29 08:31:00,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40602 to 39839. [2020-10-29 08:31:00,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39839 states. [2020-10-29 08:31:00,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39839 states to 39839 states and 44010 transitions. [2020-10-29 08:31:00,427 INFO L78 Accepts]: Start accepts. Automaton has 39839 states and 44010 transitions. Word has length 1055 [2020-10-29 08:31:00,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:31:00,428 INFO L481 AbstractCegarLoop]: Abstraction has 39839 states and 44010 transitions. [2020-10-29 08:31:00,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:31:00,428 INFO L276 IsEmpty]: Start isEmpty. Operand 39839 states and 44010 transitions. [2020-10-29 08:31:00,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1103 [2020-10-29 08:31:00,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:31:00,444 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:31:00,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 08:31:00,444 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:31:00,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:31:00,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1474921530, now seen corresponding path program 1 times [2020-10-29 08:31:00,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:31:00,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213500384] [2020-10-29 08:31:00,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:31:00,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:00,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:00,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:05,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:05,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1126 [2020-10-29 08:31:05,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:31:05,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4805 [2020-10-29 08:31:05,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:05,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:05,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:31:05,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-29 08:31:05,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 08:31:05,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:05,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:31:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:05,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:05,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:05,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:31:05,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:05,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:31:05,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:05,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:05,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:31:05,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:05,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:31:05,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:05,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:31:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:05,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:05,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:05,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:31:05,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:05,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-29 08:31:05,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:05,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:05,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:31:05,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:05,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:31:05,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:05,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:31:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:05,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:05,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:05,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:31:05,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:05,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 08:31:05,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:05,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:05,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:31:05,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:05,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:31:05,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:05,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:31:05,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:05,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:05,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:05,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:31:05,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:05,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:31:05,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:05,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:05,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:31:05,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:05,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:31:05,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:06,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:31:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:06,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:06,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:06,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:31:06,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:06,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 08:31:06,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:06,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:06,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:31:06,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:06,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:31:06,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:06,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:31:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:06,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:06,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:06,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:31:06,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:06,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 08:31:06,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:06,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:06,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:31:06,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:06,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:31:06,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:06,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-29 08:31:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:06,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:06,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:06,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 08:31:06,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:06,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 08:31:06,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:06,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:06,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:31:06,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:06,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-29 08:31:06,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:06,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-29 08:31:06,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:06,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:06,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:06,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 08:31:06,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:06,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-29 08:31:06,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:06,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:06,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:31:06,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:31:06,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 08:31:06,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:07,148 INFO L134 CoverageAnalysis]: Checked inductivity of 964 backedges. 372 proven. 2 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2020-10-29 08:31:07,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213500384] [2020-10-29 08:31:07,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:31:07,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:31:07,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914917821] [2020-10-29 08:31:07,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:31:07,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:31:07,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:31:07,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:31:07,150 INFO L87 Difference]: Start difference. First operand 39839 states and 44010 transitions. Second operand 7 states. [2020-10-29 08:31:23,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:31:23,235 INFO L93 Difference]: Finished difference Result 83385 states and 92712 transitions. [2020-10-29 08:31:23,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:31:23,237 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1102 [2020-10-29 08:31:23,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:31:23,335 INFO L225 Difference]: With dead ends: 83385 [2020-10-29 08:31:23,335 INFO L226 Difference]: Without dead ends: 44964 [2020-10-29 08:31:23,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 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 08:31:23,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44964 states. [2020-10-29 08:31:23,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44964 to 44867. [2020-10-29 08:31:23,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44867 states. [2020-10-29 08:31:24,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44867 states to 44867 states and 49329 transitions. [2020-10-29 08:31:24,061 INFO L78 Accepts]: Start accepts. Automaton has 44867 states and 49329 transitions. Word has length 1102 [2020-10-29 08:31:24,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:31:24,062 INFO L481 AbstractCegarLoop]: Abstraction has 44867 states and 49329 transitions. [2020-10-29 08:31:24,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:31:24,062 INFO L276 IsEmpty]: Start isEmpty. Operand 44867 states and 49329 transitions. [2020-10-29 08:31:24,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1193 [2020-10-29 08:31:24,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:31:24,081 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:31:24,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 08:31:24,082 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:31:24,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:31:24,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1827152326, now seen corresponding path program 1 times [2020-10-29 08:31:24,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:31:24,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578428639] [2020-10-29 08:31:24,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:31:24,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:24,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:24,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking...