/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/Problem05_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 10:46:04,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 10:46:04,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 10:46:04,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 10:46:04,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 10:46:04,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 10:46:04,954 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 10:46:04,959 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 10:46:04,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 10:46:04,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 10:46:04,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 10:46:04,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 10:46:04,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 10:46:04,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 10:46:04,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 10:46:04,994 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 10:46:04,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 10:46:05,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 10:46:05,008 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 10:46:05,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 10:46:05,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 10:46:05,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 10:46:05,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 10:46:05,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 10:46:05,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 10:46:05,034 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 10:46:05,035 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 10:46:05,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 10:46:05,038 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 10:46:05,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 10:46:05,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 10:46:05,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 10:46:05,044 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 10:46:05,045 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 10:46:05,046 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 10:46:05,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 10:46:05,048 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 10:46:05,048 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 10:46:05,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 10:46:05,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 10:46:05,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 10:46:05,058 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 [2020-10-28 10:46:05,105 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 10:46:05,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 10:46:05,110 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 10:46:05,110 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 10:46:05,110 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 10:46:05,111 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 10:46:05,111 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 10:46:05,111 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 10:46:05,111 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 10:46:05,112 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 10:46:05,113 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 10:46:05,113 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 10:46:05,113 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 10:46:05,113 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 10:46:05,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 10:46:05,114 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 10:46:05,114 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 10:46:05,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 10:46:05,115 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 10:46:05,115 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 10:46:05,115 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 10:46:05,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:46:05,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 10:46:05,116 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 10:46:05,116 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 10:46:05,116 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 10:46:05,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 10:46:05,116 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 10:46:05,117 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 10:46:05,117 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 10:46:05,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 10:46:05,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 10:46:05,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 10:46:05,623 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 10:46:05,623 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 10:46:05,624 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label30.c [2020-10-28 10:46:05,713 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ff53e18a/efb9986a0764446fa13d9a5a1f97a1e2/FLAG8da307649 [2020-10-28 10:46:07,080 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 10:46:07,081 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label30.c [2020-10-28 10:46:07,153 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ff53e18a/efb9986a0764446fa13d9a5a1f97a1e2/FLAG8da307649 [2020-10-28 10:46:07,668 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ff53e18a/efb9986a0764446fa13d9a5a1f97a1e2 [2020-10-28 10:46:07,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 10:46:07,679 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 10:46:07,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 10:46:07,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 10:46:07,687 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 10:46:07,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:46:07" (1/1) ... [2020-10-28 10:46:07,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5035366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:46:07, skipping insertion in model container [2020-10-28 10:46:07,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:46:07" (1/1) ... [2020-10-28 10:46:07,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 10:46:07,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 10:46:10,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:46:10,039 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 10:46:11,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:46:11,359 INFO L208 MainTranslator]: Completed translation [2020-10-28 10:46:11,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:46:11 WrapperNode [2020-10-28 10:46:11,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 10:46:11,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 10:46:11,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 10:46:11,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 10:46:11,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:46:11" (1/1) ... [2020-10-28 10:46:11,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:46:11" (1/1) ... [2020-10-28 10:46:11,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:46:11" (1/1) ... [2020-10-28 10:46:11,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:46:11" (1/1) ... [2020-10-28 10:46:11,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:46:11" (1/1) ... [2020-10-28 10:46:11,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:46:11" (1/1) ... [2020-10-28 10:46:11,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:46:11" (1/1) ... [2020-10-28 10:46:12,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 10:46:12,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 10:46:12,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 10:46:12,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 10:46:12,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:46:11" (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 [2020-10-28 10:46:12,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 10:46:12,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 10:46:12,097 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 10:46:12,097 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 10:46:12,097 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 10:46:12,097 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 10:46:12,097 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 10:46:12,098 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-28 10:46:12,098 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-28 10:46:12,098 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-28 10:46:12,099 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-28 10:46:12,099 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 10:46:12,099 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 10:46:12,100 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 10:46:12,100 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 10:46:12,101 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 10:46:12,101 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-28 10:46:12,101 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-28 10:46:12,101 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-28 10:46:12,101 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-28 10:46:12,101 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 10:46:12,102 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 10:46:12,102 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 10:46:12,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 10:46:12,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 10:46:12,102 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 10:46:12,102 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 10:46:12,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 10:46:12,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 10:46:12,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 10:46:12,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 10:46:12,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 10:46:12,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 10:46:22,166 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 10:46:22,167 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 10:46:22,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:46:22 BoogieIcfgContainer [2020-10-28 10:46:22,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 10:46:22,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 10:46:22,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 10:46:22,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 10:46:22,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:46:07" (1/3) ... [2020-10-28 10:46:22,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c702537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:46:22, skipping insertion in model container [2020-10-28 10:46:22,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:46:11" (2/3) ... [2020-10-28 10:46:22,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c702537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:46:22, skipping insertion in model container [2020-10-28 10:46:22,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:46:22" (3/3) ... [2020-10-28 10:46:22,182 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label30.c [2020-10-28 10:46:22,193 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 10:46:22,200 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 10:46:22,213 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 10:46:22,252 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 10:46:22,252 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 10:46:22,252 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 10:46:22,252 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 10:46:22,252 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 10:46:22,253 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 10:46:22,253 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 10:46:22,253 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 10:46:22,310 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-28 10:46:22,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1676 [2020-10-28 10:46:22,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:46:22,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:46:22,453 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:46:22,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:46:22,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1069094879, now seen corresponding path program 1 times [2020-10-28 10:46:22,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:46:22,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948767715] [2020-10-28 10:46:22,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:46:23,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:46:24,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:46:28,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:46:28,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1699 [2020-10-28 10:46:28,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:46:28,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-28 10:46:28,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:46:28,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:46:28,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 10:46:28,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:46:28,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1690 [2020-10-28 10:46:28,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 10:46:31,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:46:31,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:46:31,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:46:31,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:46:31,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:46:31,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:46:31,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 10:46:31,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:46:31,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:46:31,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:46:31,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:46:31,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:46:31,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:46:33,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:46:33,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948767715] [2020-10-28 10:46:33,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:46:33,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 10:46:33,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822083204] [2020-10-28 10:46:33,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 10:46:33,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:46:33,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 10:46:33,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 10:46:33,956 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 4 states. [2020-10-28 10:46:57,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:46:57,042 INFO L93 Difference]: Finished difference Result 6315 states and 11856 transitions. [2020-10-28 10:46:57,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:46:57,044 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1675 [2020-10-28 10:46:57,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:46:57,106 INFO L225 Difference]: With dead ends: 6315 [2020-10-28 10:46:57,107 INFO L226 Difference]: Without dead ends: 4025 [2020-10-28 10:46:57,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:46:57,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4025 states. [2020-10-28 10:46:57,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 3998. [2020-10-28 10:46:57,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3998 states. [2020-10-28 10:46:57,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3998 states to 3998 states and 6428 transitions. [2020-10-28 10:46:57,358 INFO L78 Accepts]: Start accepts. Automaton has 3998 states and 6428 transitions. Word has length 1675 [2020-10-28 10:46:57,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:46:57,363 INFO L481 AbstractCegarLoop]: Abstraction has 3998 states and 6428 transitions. [2020-10-28 10:46:57,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 10:46:57,363 INFO L276 IsEmpty]: Start isEmpty. Operand 3998 states and 6428 transitions. [2020-10-28 10:46:57,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1685 [2020-10-28 10:46:57,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:46:57,491 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:46:57,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 10:46:57,492 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:46:57,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:46:57,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1168384859, now seen corresponding path program 1 times [2020-10-28 10:46:57,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:46:57,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207144313] [2020-10-28 10:46:57,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:46:57,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:46:57,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:46:59,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:47:02,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:47:02,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1710 [2020-10-28 10:47:02,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:47:02,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5112 [2020-10-28 10:47:02,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:47:02,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:47:02,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:47:02,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:47:02,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 10:47:02,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:47:03,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:47:03,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:47:03,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:47:03,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:47:03,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:47:03,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:47:03,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 10:47:03,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:47:03,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:47:03,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:47:03,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:47:03,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:47:03,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:47:03,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:47:03,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:47:03,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:47:03,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:47:03,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 10:47:03,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:47:03,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 10:47:03,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:47:03,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:47:03,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:47:03,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:47:03,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 10:47:03,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 10:47:04,885 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:47:04,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207144313] [2020-10-28 10:47:04,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:47:04,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:47:04,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254778556] [2020-10-28 10:47:04,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:47:04,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:47:04,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:47:04,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:47:04,893 INFO L87 Difference]: Start difference. First operand 3998 states and 6428 transitions. Second operand 7 states. [2020-10-28 10:47:35,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:47:35,868 INFO L93 Difference]: Finished difference Result 11834 states and 19174 transitions. [2020-10-28 10:47:35,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:47:35,869 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1684 [2020-10-28 10:47:35,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:47:35,921 INFO L225 Difference]: With dead ends: 11834 [2020-10-28 10:47:35,921 INFO L226 Difference]: Without dead ends: 7842 [2020-10-28 10:47:35,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 10:47:35,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7842 states. [2020-10-28 10:47:36,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7842 to 7662. [2020-10-28 10:47:36,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7662 states. [2020-10-28 10:47:36,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7662 states to 7662 states and 11092 transitions. [2020-10-28 10:47:36,188 INFO L78 Accepts]: Start accepts. Automaton has 7662 states and 11092 transitions. Word has length 1684 [2020-10-28 10:47:36,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:47:36,188 INFO L481 AbstractCegarLoop]: Abstraction has 7662 states and 11092 transitions. [2020-10-28 10:47:36,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:47:36,189 INFO L276 IsEmpty]: Start isEmpty. Operand 7662 states and 11092 transitions. [2020-10-28 10:47:36,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1687 [2020-10-28 10:47:36,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:47:36,277 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:47:36,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 10:47:36,277 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:47:36,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:47:36,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1806010409, now seen corresponding path program 1 times [2020-10-28 10:47:36,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:47:36,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97767759] [2020-10-28 10:47:36,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:47:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:47:36,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:47:37,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:47:41,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:47:41,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1712 [2020-10-28 10:47:41,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:47:41,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5219 [2020-10-28 10:47:41,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:47:41,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:47:41,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:47:41,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:47:41,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 10:47:41,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:47:42,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:47:42,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:47:42,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:47:42,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:47:42,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:47:42,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:47:42,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:47:42,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:47:42,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:47:42,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:47:42,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:47:42,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:47:42,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:47:42,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:47:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:47:42,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:47:42,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:47:42,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:47:42,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:47:42,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 10:47:42,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:47:42,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:47:42,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:47:42,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:47:42,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 10:47:42,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:47:43,915 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:47:43,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97767759] [2020-10-28 10:47:43,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:47:43,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:47:43,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050336093] [2020-10-28 10:47:43,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:47:43,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:47:43,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:47:43,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:47:43,919 INFO L87 Difference]: Start difference. First operand 7662 states and 11092 transitions. Second operand 7 states. [2020-10-28 10:48:12,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:48:12,774 INFO L93 Difference]: Finished difference Result 19474 states and 27745 transitions. [2020-10-28 10:48:12,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 10:48:12,775 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1686 [2020-10-28 10:48:12,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:48:12,845 INFO L225 Difference]: With dead ends: 19474 [2020-10-28 10:48:12,845 INFO L226 Difference]: Without dead ends: 11818 [2020-10-28 10:48:12,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 10:48:12,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11818 states. [2020-10-28 10:48:13,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11818 to 11655. [2020-10-28 10:48:13,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11655 states. [2020-10-28 10:48:13,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11655 states to 11655 states and 15835 transitions. [2020-10-28 10:48:13,215 INFO L78 Accepts]: Start accepts. Automaton has 11655 states and 15835 transitions. Word has length 1686 [2020-10-28 10:48:13,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:48:13,216 INFO L481 AbstractCegarLoop]: Abstraction has 11655 states and 15835 transitions. [2020-10-28 10:48:13,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:48:13,216 INFO L276 IsEmpty]: Start isEmpty. Operand 11655 states and 15835 transitions. [2020-10-28 10:48:13,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1698 [2020-10-28 10:48:13,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:48:13,312 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:48:13,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 10:48:13,313 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:48:13,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:48:13,314 INFO L82 PathProgramCache]: Analyzing trace with hash 658758400, now seen corresponding path program 1 times [2020-10-28 10:48:13,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:48:13,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426502144] [2020-10-28 10:48:13,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:48:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:48:13,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:48:14,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:48:16,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:48:18,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:48:18,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1723 [2020-10-28 10:48:18,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:48:18,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-28 10:48:18,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:48:18,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:48:18,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:48:18,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:48:18,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 10:48:18,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:48:19,790 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-28 10:48:19,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:48:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:48:19,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:48:19,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:48:19,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:48:19,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:48:19,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 10:48:19,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:48:19,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:48:19,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:48:19,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:48:19,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:48:19,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:48:19,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:48:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:48:19,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:48:19,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:48:19,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 10:48:19,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:48:19,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 10:48:19,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:48:19,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:48:19,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:48:19,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:48:19,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 10:48:19,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:48:21,605 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:48:21,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426502144] [2020-10-28 10:48:21,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:48:21,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:48:21,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547720390] [2020-10-28 10:48:21,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:48:21,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:48:21,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:48:21,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:48:21,615 INFO L87 Difference]: Start difference. First operand 11655 states and 15835 transitions. Second operand 7 states. [2020-10-28 10:48:52,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:48:52,114 INFO L93 Difference]: Finished difference Result 29376 states and 39687 transitions. [2020-10-28 10:48:52,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:48:52,115 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1697 [2020-10-28 10:48:52,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:48:52,173 INFO L225 Difference]: With dead ends: 29376 [2020-10-28 10:48:52,173 INFO L226 Difference]: Without dead ends: 17727 [2020-10-28 10:48:52,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 10:48:52,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17727 states. [2020-10-28 10:48:52,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17727 to 17352. [2020-10-28 10:48:52,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17352 states. [2020-10-28 10:48:52,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17352 states to 17352 states and 22271 transitions. [2020-10-28 10:48:52,662 INFO L78 Accepts]: Start accepts. Automaton has 17352 states and 22271 transitions. Word has length 1697 [2020-10-28 10:48:52,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:48:52,663 INFO L481 AbstractCegarLoop]: Abstraction has 17352 states and 22271 transitions. [2020-10-28 10:48:52,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:48:52,663 INFO L276 IsEmpty]: Start isEmpty. Operand 17352 states and 22271 transitions. [2020-10-28 10:48:52,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1713 [2020-10-28 10:48:52,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:48:52,747 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:48:52,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 10:48:52,747 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:48:52,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:48:52,748 INFO L82 PathProgramCache]: Analyzing trace with hash -807452021, now seen corresponding path program 1 times [2020-10-28 10:48:52,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:48:52,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071884403] [2020-10-28 10:48:52,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:48:52,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:48:52,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:48:54,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:48:57,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:48:57,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1738 [2020-10-28 10:48:57,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:48:57,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-28 10:48:57,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:48:57,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:48:57,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:48:57,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:48:57,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 10:48:57,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:48:58,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:48:58,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:48:58,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:48:58,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:48:58,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:48:58,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:48:58,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 10:48:58,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:48:58,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:48:58,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:48:58,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:48:58,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:48:58,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:48:58,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:48:58,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:48:58,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:48:58,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:48:58,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 10:48:58,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:48:58,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 10:48:58,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:48:58,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:48:58,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:48:58,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:48:58,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 10:48:58,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:49:00,079 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:49:00,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071884403] [2020-10-28 10:49:00,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:49:00,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 10:49:00,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663146357] [2020-10-28 10:49:00,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:49:00,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:49:00,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:49:00,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:49:00,083 INFO L87 Difference]: Start difference. First operand 17352 states and 22271 transitions. Second operand 8 states. [2020-10-28 10:49:00,267 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-28 10:49:46,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:49:46,966 INFO L93 Difference]: Finished difference Result 66891 states and 93196 transitions. [2020-10-28 10:49:46,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 10:49:46,968 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1712 [2020-10-28 10:49:46,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:49:47,213 INFO L225 Difference]: With dead ends: 66891 [2020-10-28 10:49:47,213 INFO L226 Difference]: Without dead ends: 49545 [2020-10-28 10:49:47,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 10:49:47,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49545 states. [2020-10-28 10:49:48,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49545 to 49120. [2020-10-28 10:49:48,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49120 states. [2020-10-28 10:49:48,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49120 states to 49120 states and 64507 transitions. [2020-10-28 10:49:48,682 INFO L78 Accepts]: Start accepts. Automaton has 49120 states and 64507 transitions. Word has length 1712 [2020-10-28 10:49:48,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:49:48,682 INFO L481 AbstractCegarLoop]: Abstraction has 49120 states and 64507 transitions. [2020-10-28 10:49:48,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:49:48,683 INFO L276 IsEmpty]: Start isEmpty. Operand 49120 states and 64507 transitions. [2020-10-28 10:49:48,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1811 [2020-10-28 10:49:48,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:49:48,872 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:49:48,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 10:49:48,872 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:49:48,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:49:48,874 INFO L82 PathProgramCache]: Analyzing trace with hash -529793030, now seen corresponding path program 1 times [2020-10-28 10:49:48,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:49:48,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558396752] [2020-10-28 10:49:48,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:49:49,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat