/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:37:06,098 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:37:06,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:37:06,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:37:06,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:37:06,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:37:06,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:37:06,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:37:06,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:37:06,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:37:06,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:37:06,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:37:06,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:37:06,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:37:06,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:37:06,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:37:06,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:37:06,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:37:06,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:37:06,212 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:37:06,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:37:06,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:37:06,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:37:06,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:37:06,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 08:37:06,241 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 08:37:06,244 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 08:37:06,246 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 08:37:06,247 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 08:37:06,248 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 08:37:06,249 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:37:06,250 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:37:06,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:37:06,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:37:06,253 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:37:06,253 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:37:06,254 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:37:06,254 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:37:06,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:37:06,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:37:06,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:37:06,257 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:37:06,311 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:37:06,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:37:06,315 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:37:06,316 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:37:06,316 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:37:06,316 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:37:06,316 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:37:06,316 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:37:06,317 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:37:06,317 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:37:06,318 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:37:06,318 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:37:06,318 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:37:06,319 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:37:06,319 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:37:06,319 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:37:06,319 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:37:06,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:37:06,320 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:37:06,320 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:37:06,320 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:37:06,320 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:37:06,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:37:06,321 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:37:06,321 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:37:06,321 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:37:06,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:37:06,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:37:06,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:37:06,735 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:37:06,736 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:37:06,737 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-12-22 08:37:06,819 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ddf19cc0/da586139a37b487d95132643bb203635/FLAGef9cda535 [2020-12-22 08:37:07,472 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:37:07,474 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-12-22 08:37:07,488 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ddf19cc0/da586139a37b487d95132643bb203635/FLAGef9cda535 [2020-12-22 08:37:07,748 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ddf19cc0/da586139a37b487d95132643bb203635 [2020-12-22 08:37:07,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:37:07,756 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:37:07,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:37:07,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:37:07,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:37:07,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:37:07" (1/1) ... [2020-12-22 08:37:07,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71b2c15e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:37:07, skipping insertion in model container [2020-12-22 08:37:07,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:37:07" (1/1) ... [2020-12-22 08:37:07,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:37:07,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:37:08,052 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[5415,5428] [2020-12-22 08:37:08,077 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[8088,8101] [2020-12-22 08:37:08,116 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[10895,10908] [2020-12-22 08:37:08,146 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[13470,13483] [2020-12-22 08:37:08,163 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[16476,16489] [2020-12-22 08:37:08,178 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[19066,19079] [2020-12-22 08:37:08,193 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[21826,21839] [2020-12-22 08:37:08,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:37:08,243 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:37:08,337 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[5415,5428] [2020-12-22 08:37:08,361 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[8088,8101] [2020-12-22 08:37:08,374 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[10895,10908] [2020-12-22 08:37:08,383 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[13470,13483] [2020-12-22 08:37:08,395 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[16476,16489] [2020-12-22 08:37:08,405 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[19066,19079] [2020-12-22 08:37:08,444 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[21826,21839] [2020-12-22 08:37:08,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:37:08,541 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:37:08,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:37:08 WrapperNode [2020-12-22 08:37:08,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:37:08,543 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:37:08,543 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:37:08,543 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:37:08,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:37:08" (1/1) ... [2020-12-22 08:37:08,572 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:37:08" (1/1) ... [2020-12-22 08:37:08,655 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:37:08,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:37:08,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:37:08,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:37:08,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:37:08" (1/1) ... [2020-12-22 08:37:08,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:37:08" (1/1) ... [2020-12-22 08:37:08,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:37:08" (1/1) ... [2020-12-22 08:37:08,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:37:08" (1/1) ... [2020-12-22 08:37:08,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:37:08" (1/1) ... [2020-12-22 08:37:08,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:37:08" (1/1) ... [2020-12-22 08:37:08,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:37:08" (1/1) ... [2020-12-22 08:37:08,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:37:08,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:37:08,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:37:08,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:37:08,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:37:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 08:37:08,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:37:08,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:37:08,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:37:08,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:37:10,241 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:37:10,242 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:37:10,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:37:10 BoogieIcfgContainer [2020-12-22 08:37:10,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:37:10,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:37:10,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:37:10,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:37:10,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:37:07" (1/3) ... [2020-12-22 08:37:10,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f758de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:37:10, skipping insertion in model container [2020-12-22 08:37:10,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:37:08" (2/3) ... [2020-12-22 08:37:10,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f758de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:37:10, skipping insertion in model container [2020-12-22 08:37:10,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:37:10" (3/3) ... [2020-12-22 08:37:10,253 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-12-22 08:37:10,260 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:37:10,265 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-22 08:37:10,284 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-22 08:37:10,314 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:37:10,314 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:37:10,314 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:37:10,314 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:37:10,314 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:37:10,315 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:37:10,315 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:37:10,315 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:37:10,339 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states. [2020-12-22 08:37:10,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 08:37:10,351 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:10,352 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] [2020-12-22 08:37:10,353 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:10,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:10,359 INFO L82 PathProgramCache]: Analyzing trace with hash -102713619, now seen corresponding path program 1 times [2020-12-22 08:37:10,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:10,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501940903] [2020-12-22 08:37:10,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:10,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:10,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501940903] [2020-12-22 08:37:10,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:10,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:37:10,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946934002] [2020-12-22 08:37:10,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:37:10,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:10,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:37:10,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:37:10,867 INFO L87 Difference]: Start difference. First operand 266 states. Second operand 5 states. [2020-12-22 08:37:11,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:11,263 INFO L93 Difference]: Finished difference Result 375 states and 642 transitions. [2020-12-22 08:37:11,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:37:11,265 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-12-22 08:37:11,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:11,305 INFO L225 Difference]: With dead ends: 375 [2020-12-22 08:37:11,306 INFO L226 Difference]: Without dead ends: 231 [2020-12-22 08:37:11,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:37:11,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-12-22 08:37:11,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2020-12-22 08:37:11,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-12-22 08:37:11,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 288 transitions. [2020-12-22 08:37:11,376 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 288 transitions. Word has length 47 [2020-12-22 08:37:11,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:11,377 INFO L481 AbstractCegarLoop]: Abstraction has 231 states and 288 transitions. [2020-12-22 08:37:11,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:37:11,377 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 288 transitions. [2020-12-22 08:37:11,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 08:37:11,380 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:11,380 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] [2020-12-22 08:37:11,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:37:11,381 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:11,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:11,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1937910484, now seen corresponding path program 1 times [2020-12-22 08:37:11,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:11,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961091972] [2020-12-22 08:37:11,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:11,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:11,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:11,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961091972] [2020-12-22 08:37:11,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:11,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:37:11,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225952713] [2020-12-22 08:37:11,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:37:11,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:11,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:37:11,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:37:11,543 INFO L87 Difference]: Start difference. First operand 231 states and 288 transitions. Second operand 5 states. [2020-12-22 08:37:11,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:11,736 INFO L93 Difference]: Finished difference Result 299 states and 376 transitions. [2020-12-22 08:37:11,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:37:11,737 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-12-22 08:37:11,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:11,739 INFO L225 Difference]: With dead ends: 299 [2020-12-22 08:37:11,739 INFO L226 Difference]: Without dead ends: 177 [2020-12-22 08:37:11,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:37:11,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-12-22 08:37:11,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2020-12-22 08:37:11,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-12-22 08:37:11,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 219 transitions. [2020-12-22 08:37:11,758 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 219 transitions. Word has length 47 [2020-12-22 08:37:11,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:11,759 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 219 transitions. [2020-12-22 08:37:11,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:37:11,759 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 219 transitions. [2020-12-22 08:37:11,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 08:37:11,761 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:11,762 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] [2020-12-22 08:37:11,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:37:11,762 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:11,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:11,763 INFO L82 PathProgramCache]: Analyzing trace with hash 458596476, now seen corresponding path program 1 times [2020-12-22 08:37:11,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:11,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288362766] [2020-12-22 08:37:11,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:11,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:11,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:11,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288362766] [2020-12-22 08:37:11,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:11,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:37:11,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298822431] [2020-12-22 08:37:11,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:37:11,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:11,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:37:11,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:37:11,861 INFO L87 Difference]: Start difference. First operand 177 states and 219 transitions. Second operand 5 states. [2020-12-22 08:37:12,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:12,111 INFO L93 Difference]: Finished difference Result 339 states and 435 transitions. [2020-12-22 08:37:12,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:37:12,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-12-22 08:37:12,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:12,122 INFO L225 Difference]: With dead ends: 339 [2020-12-22 08:37:12,123 INFO L226 Difference]: Without dead ends: 239 [2020-12-22 08:37:12,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:37:12,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-12-22 08:37:12,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 215. [2020-12-22 08:37:12,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-12-22 08:37:12,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 281 transitions. [2020-12-22 08:37:12,176 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 281 transitions. Word has length 47 [2020-12-22 08:37:12,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:12,179 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 281 transitions. [2020-12-22 08:37:12,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:37:12,180 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 281 transitions. [2020-12-22 08:37:12,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 08:37:12,181 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:12,182 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] [2020-12-22 08:37:12,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:37:12,184 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:12,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:12,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1498085814, now seen corresponding path program 1 times [2020-12-22 08:37:12,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:12,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283492415] [2020-12-22 08:37:12,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:12,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:12,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283492415] [2020-12-22 08:37:12,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:12,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:37:12,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188977783] [2020-12-22 08:37:12,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:37:12,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:12,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:37:12,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:37:12,411 INFO L87 Difference]: Start difference. First operand 215 states and 281 transitions. Second operand 9 states. [2020-12-22 08:37:13,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:13,030 INFO L93 Difference]: Finished difference Result 530 states and 734 transitions. [2020-12-22 08:37:13,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:37:13,031 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2020-12-22 08:37:13,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:13,035 INFO L225 Difference]: With dead ends: 530 [2020-12-22 08:37:13,035 INFO L226 Difference]: Without dead ends: 525 [2020-12-22 08:37:13,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-12-22 08:37:13,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2020-12-22 08:37:13,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 215. [2020-12-22 08:37:13,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-12-22 08:37:13,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 280 transitions. [2020-12-22 08:37:13,069 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 280 transitions. Word has length 48 [2020-12-22 08:37:13,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:13,070 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 280 transitions. [2020-12-22 08:37:13,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:37:13,070 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 280 transitions. [2020-12-22 08:37:13,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 08:37:13,071 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:13,072 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] [2020-12-22 08:37:13,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:37:13,072 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:13,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:13,073 INFO L82 PathProgramCache]: Analyzing trace with hash 267052195, now seen corresponding path program 1 times [2020-12-22 08:37:13,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:13,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119936923] [2020-12-22 08:37:13,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:13,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:13,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119936923] [2020-12-22 08:37:13,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:13,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:37:13,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441757089] [2020-12-22 08:37:13,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:37:13,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:13,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:37:13,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:37:13,215 INFO L87 Difference]: Start difference. First operand 215 states and 280 transitions. Second operand 9 states. [2020-12-22 08:37:13,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:13,980 INFO L93 Difference]: Finished difference Result 622 states and 869 transitions. [2020-12-22 08:37:13,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 08:37:13,981 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2020-12-22 08:37:13,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:13,985 INFO L225 Difference]: With dead ends: 622 [2020-12-22 08:37:13,985 INFO L226 Difference]: Without dead ends: 521 [2020-12-22 08:37:13,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:37:13,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2020-12-22 08:37:14,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 215. [2020-12-22 08:37:14,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-12-22 08:37:14,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 279 transitions. [2020-12-22 08:37:14,011 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 279 transitions. Word has length 48 [2020-12-22 08:37:14,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:14,012 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 279 transitions. [2020-12-22 08:37:14,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:37:14,012 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 279 transitions. [2020-12-22 08:37:14,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 08:37:14,013 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:14,013 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] [2020-12-22 08:37:14,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:37:14,013 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:14,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:14,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1788008380, now seen corresponding path program 1 times [2020-12-22 08:37:14,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:14,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280818860] [2020-12-22 08:37:14,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:14,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:14,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:14,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280818860] [2020-12-22 08:37:14,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:14,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:37:14,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99616520] [2020-12-22 08:37:14,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:37:14,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:14,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:37:14,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:37:14,138 INFO L87 Difference]: Start difference. First operand 215 states and 279 transitions. Second operand 8 states. [2020-12-22 08:37:14,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:14,521 INFO L93 Difference]: Finished difference Result 459 states and 614 transitions. [2020-12-22 08:37:14,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 08:37:14,521 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2020-12-22 08:37:14,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:14,527 INFO L225 Difference]: With dead ends: 459 [2020-12-22 08:37:14,527 INFO L226 Difference]: Without dead ends: 335 [2020-12-22 08:37:14,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-12-22 08:37:14,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-12-22 08:37:14,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 215. [2020-12-22 08:37:14,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-12-22 08:37:14,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 278 transitions. [2020-12-22 08:37:14,562 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 278 transitions. Word has length 48 [2020-12-22 08:37:14,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:14,563 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 278 transitions. [2020-12-22 08:37:14,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:37:14,567 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 278 transitions. [2020-12-22 08:37:14,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 08:37:14,568 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:14,568 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] [2020-12-22 08:37:14,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:37:14,569 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:14,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:14,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1932349207, now seen corresponding path program 1 times [2020-12-22 08:37:14,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:14,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219224516] [2020-12-22 08:37:14,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:14,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:15,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:15,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219224516] [2020-12-22 08:37:15,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:15,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:37:15,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353397227] [2020-12-22 08:37:15,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:37:15,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:15,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:37:15,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:37:15,132 INFO L87 Difference]: Start difference. First operand 215 states and 278 transitions. Second operand 19 states. [2020-12-22 08:37:17,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:17,096 INFO L93 Difference]: Finished difference Result 403 states and 529 transitions. [2020-12-22 08:37:17,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 08:37:17,096 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 50 [2020-12-22 08:37:17,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:17,100 INFO L225 Difference]: With dead ends: 403 [2020-12-22 08:37:17,100 INFO L226 Difference]: Without dead ends: 399 [2020-12-22 08:37:17,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=237, Invalid=1095, Unknown=0, NotChecked=0, Total=1332 [2020-12-22 08:37:17,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-12-22 08:37:17,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 219. [2020-12-22 08:37:17,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-12-22 08:37:17,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 284 transitions. [2020-12-22 08:37:17,138 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 284 transitions. Word has length 50 [2020-12-22 08:37:17,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:17,139 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 284 transitions. [2020-12-22 08:37:17,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:37:17,139 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 284 transitions. [2020-12-22 08:37:17,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 08:37:17,140 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:17,140 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] [2020-12-22 08:37:17,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:37:17,141 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:17,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:17,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1779763646, now seen corresponding path program 1 times [2020-12-22 08:37:17,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:17,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971246359] [2020-12-22 08:37:17,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:17,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:17,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971246359] [2020-12-22 08:37:17,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:17,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:37:17,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50356499] [2020-12-22 08:37:17,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:37:17,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:17,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:37:17,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:37:17,719 INFO L87 Difference]: Start difference. First operand 219 states and 284 transitions. Second operand 19 states. [2020-12-22 08:37:17,903 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2020-12-22 08:37:18,416 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-12-22 08:37:18,923 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-12-22 08:37:19,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:19,860 INFO L93 Difference]: Finished difference Result 472 states and 643 transitions. [2020-12-22 08:37:19,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-22 08:37:19,861 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 50 [2020-12-22 08:37:19,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:19,863 INFO L225 Difference]: With dead ends: 472 [2020-12-22 08:37:19,864 INFO L226 Difference]: Without dead ends: 384 [2020-12-22 08:37:19,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=239, Invalid=883, Unknown=0, NotChecked=0, Total=1122 [2020-12-22 08:37:19,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2020-12-22 08:37:19,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 225. [2020-12-22 08:37:19,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-12-22 08:37:19,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 292 transitions. [2020-12-22 08:37:19,889 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 292 transitions. Word has length 50 [2020-12-22 08:37:19,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:19,890 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 292 transitions. [2020-12-22 08:37:19,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:37:19,890 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 292 transitions. [2020-12-22 08:37:19,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 08:37:19,891 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:19,891 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] [2020-12-22 08:37:19,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:37:19,891 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:19,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:19,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1793833253, now seen corresponding path program 1 times [2020-12-22 08:37:19,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:19,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259276920] [2020-12-22 08:37:19,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:20,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:20,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259276920] [2020-12-22 08:37:20,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:20,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:37:20,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861621696] [2020-12-22 08:37:20,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:37:20,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:20,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:37:20,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:37:20,493 INFO L87 Difference]: Start difference. First operand 225 states and 292 transitions. Second operand 19 states. [2020-12-22 08:37:20,741 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2020-12-22 08:37:21,322 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-12-22 08:37:21,486 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-12-22 08:37:21,782 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-12-22 08:37:22,111 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-12-22 08:37:23,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:23,442 INFO L93 Difference]: Finished difference Result 503 states and 695 transitions. [2020-12-22 08:37:23,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 08:37:23,443 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 50 [2020-12-22 08:37:23,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:23,446 INFO L225 Difference]: With dead ends: 503 [2020-12-22 08:37:23,446 INFO L226 Difference]: Without dead ends: 497 [2020-12-22 08:37:23,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-12-22 08:37:23,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2020-12-22 08:37:23,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 225. [2020-12-22 08:37:23,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-12-22 08:37:23,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 291 transitions. [2020-12-22 08:37:23,477 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 291 transitions. Word has length 50 [2020-12-22 08:37:23,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:23,478 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 291 transitions. [2020-12-22 08:37:23,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:37:23,479 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 291 transitions. [2020-12-22 08:37:23,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 08:37:23,482 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:23,482 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] [2020-12-22 08:37:23,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:37:23,483 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:23,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:23,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1827600366, now seen corresponding path program 1 times [2020-12-22 08:37:23,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:23,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730389389] [2020-12-22 08:37:23,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:23,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:23,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:23,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730389389] [2020-12-22 08:37:23,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:23,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-22 08:37:23,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371348771] [2020-12-22 08:37:23,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 08:37:23,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:23,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 08:37:23,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-12-22 08:37:23,881 INFO L87 Difference]: Start difference. First operand 225 states and 291 transitions. Second operand 12 states. [2020-12-22 08:37:24,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:24,771 INFO L93 Difference]: Finished difference Result 444 states and 618 transitions. [2020-12-22 08:37:24,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 08:37:24,772 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2020-12-22 08:37:24,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:24,774 INFO L225 Difference]: With dead ends: 444 [2020-12-22 08:37:24,774 INFO L226 Difference]: Without dead ends: 349 [2020-12-22 08:37:24,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:37:24,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-12-22 08:37:24,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 214. [2020-12-22 08:37:24,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-12-22 08:37:24,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 279 transitions. [2020-12-22 08:37:24,821 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 279 transitions. Word has length 50 [2020-12-22 08:37:24,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:24,822 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 279 transitions. [2020-12-22 08:37:24,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 08:37:24,822 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 279 transitions. [2020-12-22 08:37:24,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 08:37:24,823 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:24,823 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] [2020-12-22 08:37:24,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:37:24,823 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:24,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:24,824 INFO L82 PathProgramCache]: Analyzing trace with hash -767196360, now seen corresponding path program 1 times [2020-12-22 08:37:24,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:24,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507050316] [2020-12-22 08:37:24,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:24,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:24,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507050316] [2020-12-22 08:37:24,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:24,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:37:24,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903365714] [2020-12-22 08:37:24,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:37:24,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:24,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:37:24,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:37:24,985 INFO L87 Difference]: Start difference. First operand 214 states and 279 transitions. Second operand 9 states. [2020-12-22 08:37:25,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:25,481 INFO L93 Difference]: Finished difference Result 349 states and 461 transitions. [2020-12-22 08:37:25,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 08:37:25,481 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-12-22 08:37:25,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:25,484 INFO L225 Difference]: With dead ends: 349 [2020-12-22 08:37:25,484 INFO L226 Difference]: Without dead ends: 342 [2020-12-22 08:37:25,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-12-22 08:37:25,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-12-22 08:37:25,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 214. [2020-12-22 08:37:25,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-12-22 08:37:25,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 277 transitions. [2020-12-22 08:37:25,512 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 277 transitions. Word has length 51 [2020-12-22 08:37:25,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:25,513 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 277 transitions. [2020-12-22 08:37:25,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:37:25,513 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 277 transitions. [2020-12-22 08:37:25,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 08:37:25,513 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:25,514 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] [2020-12-22 08:37:25,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:37:25,514 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:25,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:25,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1195663953, now seen corresponding path program 1 times [2020-12-22 08:37:25,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:25,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021058653] [2020-12-22 08:37:25,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:25,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:25,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021058653] [2020-12-22 08:37:25,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:25,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:37:25,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133475623] [2020-12-22 08:37:25,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:37:25,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:25,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:37:25,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:37:25,658 INFO L87 Difference]: Start difference. First operand 214 states and 277 transitions. Second operand 10 states. [2020-12-22 08:37:26,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:26,654 INFO L93 Difference]: Finished difference Result 553 states and 764 transitions. [2020-12-22 08:37:26,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 08:37:26,655 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2020-12-22 08:37:26,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:26,658 INFO L225 Difference]: With dead ends: 553 [2020-12-22 08:37:26,658 INFO L226 Difference]: Without dead ends: 451 [2020-12-22 08:37:26,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:37:26,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-12-22 08:37:26,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 214. [2020-12-22 08:37:26,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-12-22 08:37:26,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 276 transitions. [2020-12-22 08:37:26,688 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 276 transitions. Word has length 51 [2020-12-22 08:37:26,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:26,689 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 276 transitions. [2020-12-22 08:37:26,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:37:26,689 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 276 transitions. [2020-12-22 08:37:26,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 08:37:26,689 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:26,690 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] [2020-12-22 08:37:26,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:37:26,690 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:26,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:26,691 INFO L82 PathProgramCache]: Analyzing trace with hash 72941877, now seen corresponding path program 1 times [2020-12-22 08:37:26,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:26,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215073594] [2020-12-22 08:37:26,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:27,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:27,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215073594] [2020-12-22 08:37:27,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:27,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-12-22 08:37:27,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923386537] [2020-12-22 08:37:27,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 08:37:27,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:27,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 08:37:27,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-12-22 08:37:27,302 INFO L87 Difference]: Start difference. First operand 214 states and 276 transitions. Second operand 16 states. [2020-12-22 08:37:28,045 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-12-22 08:37:28,231 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 08:37:28,372 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 08:37:28,579 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-12-22 08:37:29,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:29,692 INFO L93 Difference]: Finished difference Result 605 states and 837 transitions. [2020-12-22 08:37:29,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 08:37:29,693 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 51 [2020-12-22 08:37:29,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:29,697 INFO L225 Difference]: With dead ends: 605 [2020-12-22 08:37:29,697 INFO L226 Difference]: Without dead ends: 589 [2020-12-22 08:37:29,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=171, Invalid=585, Unknown=0, NotChecked=0, Total=756 [2020-12-22 08:37:29,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2020-12-22 08:37:29,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 206. [2020-12-22 08:37:29,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-12-22 08:37:29,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 266 transitions. [2020-12-22 08:37:29,732 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 266 transitions. Word has length 51 [2020-12-22 08:37:29,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:29,733 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 266 transitions. [2020-12-22 08:37:29,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 08:37:29,733 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 266 transitions. [2020-12-22 08:37:29,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 08:37:29,734 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:29,734 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] [2020-12-22 08:37:29,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:37:29,734 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:29,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:29,735 INFO L82 PathProgramCache]: Analyzing trace with hash -314877430, now seen corresponding path program 1 times [2020-12-22 08:37:29,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:29,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747057230] [2020-12-22 08:37:29,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:29,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:29,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747057230] [2020-12-22 08:37:29,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:29,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 08:37:29,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584434252] [2020-12-22 08:37:29,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:37:29,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:29,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:37:29,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:37:29,900 INFO L87 Difference]: Start difference. First operand 206 states and 266 transitions. Second operand 11 states. [2020-12-22 08:37:32,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:32,317 INFO L93 Difference]: Finished difference Result 1132 states and 1598 transitions. [2020-12-22 08:37:32,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-22 08:37:32,317 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 51 [2020-12-22 08:37:32,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:32,323 INFO L225 Difference]: With dead ends: 1132 [2020-12-22 08:37:32,323 INFO L226 Difference]: Without dead ends: 1125 [2020-12-22 08:37:32,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=374, Invalid=1186, Unknown=0, NotChecked=0, Total=1560 [2020-12-22 08:37:32,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-12-22 08:37:32,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 206. [2020-12-22 08:37:32,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-12-22 08:37:32,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 265 transitions. [2020-12-22 08:37:32,371 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 265 transitions. Word has length 51 [2020-12-22 08:37:32,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:32,371 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 265 transitions. [2020-12-22 08:37:32,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:37:32,371 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 265 transitions. [2020-12-22 08:37:32,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 08:37:32,372 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:32,372 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] [2020-12-22 08:37:32,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:37:32,372 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:32,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:32,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1266894549, now seen corresponding path program 1 times [2020-12-22 08:37:32,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:32,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451231657] [2020-12-22 08:37:32,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:32,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:32,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:32,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451231657] [2020-12-22 08:37:32,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:32,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-12-22 08:37:32,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941044869] [2020-12-22 08:37:32,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 08:37:32,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:32,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 08:37:32,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-12-22 08:37:32,839 INFO L87 Difference]: Start difference. First operand 206 states and 265 transitions. Second operand 16 states. [2020-12-22 08:37:33,755 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-12-22 08:37:34,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:34,234 INFO L93 Difference]: Finished difference Result 306 states and 407 transitions. [2020-12-22 08:37:34,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 08:37:34,234 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 51 [2020-12-22 08:37:34,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:34,235 INFO L225 Difference]: With dead ends: 306 [2020-12-22 08:37:34,236 INFO L226 Difference]: Without dead ends: 218 [2020-12-22 08:37:34,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2020-12-22 08:37:34,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-12-22 08:37:34,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 200. [2020-12-22 08:37:34,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-12-22 08:37:34,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 257 transitions. [2020-12-22 08:37:34,273 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 257 transitions. Word has length 51 [2020-12-22 08:37:34,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:34,273 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 257 transitions. [2020-12-22 08:37:34,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 08:37:34,273 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 257 transitions. [2020-12-22 08:37:34,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 08:37:34,274 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:34,274 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] [2020-12-22 08:37:34,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:37:34,274 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:34,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:34,275 INFO L82 PathProgramCache]: Analyzing trace with hash -611388429, now seen corresponding path program 1 times [2020-12-22 08:37:34,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:34,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130101659] [2020-12-22 08:37:34,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:34,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:34,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130101659] [2020-12-22 08:37:34,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:34,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:37:34,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20705760] [2020-12-22 08:37:34,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:37:34,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:34,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:37:34,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:37:34,384 INFO L87 Difference]: Start difference. First operand 200 states and 257 transitions. Second operand 9 states. [2020-12-22 08:37:34,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:34,915 INFO L93 Difference]: Finished difference Result 349 states and 474 transitions. [2020-12-22 08:37:34,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 08:37:34,916 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-12-22 08:37:34,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:34,918 INFO L225 Difference]: With dead ends: 349 [2020-12-22 08:37:34,918 INFO L226 Difference]: Without dead ends: 247 [2020-12-22 08:37:34,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2020-12-22 08:37:34,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-12-22 08:37:34,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 200. [2020-12-22 08:37:34,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-12-22 08:37:34,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 256 transitions. [2020-12-22 08:37:34,959 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 256 transitions. Word has length 52 [2020-12-22 08:37:34,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:34,959 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 256 transitions. [2020-12-22 08:37:34,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:37:34,959 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 256 transitions. [2020-12-22 08:37:34,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 08:37:34,960 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:34,960 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] [2020-12-22 08:37:34,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:37:34,960 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:34,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:34,961 INFO L82 PathProgramCache]: Analyzing trace with hash 966049747, now seen corresponding path program 1 times [2020-12-22 08:37:34,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:34,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151394071] [2020-12-22 08:37:34,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:35,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:35,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151394071] [2020-12-22 08:37:35,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:35,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:37:35,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546465211] [2020-12-22 08:37:35,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:37:35,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:35,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:37:35,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:37:35,075 INFO L87 Difference]: Start difference. First operand 200 states and 256 transitions. Second operand 9 states. [2020-12-22 08:37:35,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:35,641 INFO L93 Difference]: Finished difference Result 337 states and 441 transitions. [2020-12-22 08:37:35,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 08:37:35,641 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-12-22 08:37:35,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:35,643 INFO L225 Difference]: With dead ends: 337 [2020-12-22 08:37:35,643 INFO L226 Difference]: Without dead ends: 330 [2020-12-22 08:37:35,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:37:35,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-12-22 08:37:35,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 196. [2020-12-22 08:37:35,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-12-22 08:37:35,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 251 transitions. [2020-12-22 08:37:35,682 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 251 transitions. Word has length 52 [2020-12-22 08:37:35,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:35,683 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 251 transitions. [2020-12-22 08:37:35,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:37:35,683 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 251 transitions. [2020-12-22 08:37:35,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 08:37:35,683 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:35,683 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] [2020-12-22 08:37:35,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 08:37:35,684 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:35,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:35,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1837589620, now seen corresponding path program 1 times [2020-12-22 08:37:35,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:35,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101178505] [2020-12-22 08:37:35,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:36,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:36,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101178505] [2020-12-22 08:37:36,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:36,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-12-22 08:37:36,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935501411] [2020-12-22 08:37:36,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 08:37:36,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:36,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 08:37:36,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-12-22 08:37:36,277 INFO L87 Difference]: Start difference. First operand 196 states and 251 transitions. Second operand 18 states. [2020-12-22 08:37:36,439 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2020-12-22 08:37:36,966 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-12-22 08:37:38,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:38,303 INFO L93 Difference]: Finished difference Result 412 states and 556 transitions. [2020-12-22 08:37:38,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-22 08:37:38,303 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 53 [2020-12-22 08:37:38,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:38,305 INFO L225 Difference]: With dead ends: 412 [2020-12-22 08:37:38,305 INFO L226 Difference]: Without dead ends: 406 [2020-12-22 08:37:38,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=191, Invalid=865, Unknown=0, NotChecked=0, Total=1056 [2020-12-22 08:37:38,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2020-12-22 08:37:38,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 202. [2020-12-22 08:37:38,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-12-22 08:37:38,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 259 transitions. [2020-12-22 08:37:38,349 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 259 transitions. Word has length 53 [2020-12-22 08:37:38,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:38,350 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 259 transitions. [2020-12-22 08:37:38,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 08:37:38,350 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 259 transitions. [2020-12-22 08:37:38,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 08:37:38,351 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:38,351 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] [2020-12-22 08:37:38,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 08:37:38,351 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:38,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:38,352 INFO L82 PathProgramCache]: Analyzing trace with hash 916052531, now seen corresponding path program 1 times [2020-12-22 08:37:38,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:38,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437866042] [2020-12-22 08:37:38,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:38,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:38,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437866042] [2020-12-22 08:37:38,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:38,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-12-22 08:37:38,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029218845] [2020-12-22 08:37:38,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 08:37:38,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:38,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 08:37:38,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-12-22 08:37:38,667 INFO L87 Difference]: Start difference. First operand 202 states and 259 transitions. Second operand 16 states. [2020-12-22 08:37:40,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:40,071 INFO L93 Difference]: Finished difference Result 232 states and 287 transitions. [2020-12-22 08:37:40,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 08:37:40,072 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2020-12-22 08:37:40,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:40,074 INFO L225 Difference]: With dead ends: 232 [2020-12-22 08:37:40,074 INFO L226 Difference]: Without dead ends: 224 [2020-12-22 08:37:40,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=162, Invalid=708, Unknown=0, NotChecked=0, Total=870 [2020-12-22 08:37:40,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-12-22 08:37:40,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 202. [2020-12-22 08:37:40,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-12-22 08:37:40,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 258 transitions. [2020-12-22 08:37:40,112 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 258 transitions. Word has length 53 [2020-12-22 08:37:40,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:40,112 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 258 transitions. [2020-12-22 08:37:40,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 08:37:40,113 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 258 transitions. [2020-12-22 08:37:40,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 08:37:40,113 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:40,113 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] [2020-12-22 08:37:40,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 08:37:40,114 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:40,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:40,114 INFO L82 PathProgramCache]: Analyzing trace with hash 202849221, now seen corresponding path program 1 times [2020-12-22 08:37:40,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:40,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175863525] [2020-12-22 08:37:40,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:40,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:40,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:40,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175863525] [2020-12-22 08:37:40,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:40,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-12-22 08:37:40,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709396951] [2020-12-22 08:37:40,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 08:37:40,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:40,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 08:37:40,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2020-12-22 08:37:40,581 INFO L87 Difference]: Start difference. First operand 202 states and 258 transitions. Second operand 18 states. [2020-12-22 08:37:40,806 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-12-22 08:37:41,837 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-12-22 08:37:42,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:42,456 INFO L93 Difference]: Finished difference Result 232 states and 286 transitions. [2020-12-22 08:37:42,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 08:37:42,456 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 53 [2020-12-22 08:37:42,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:42,457 INFO L225 Difference]: With dead ends: 232 [2020-12-22 08:37:42,457 INFO L226 Difference]: Without dead ends: 224 [2020-12-22 08:37:42,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=209, Invalid=721, Unknown=0, NotChecked=0, Total=930 [2020-12-22 08:37:42,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-12-22 08:37:42,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 207. [2020-12-22 08:37:42,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-12-22 08:37:42,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 263 transitions. [2020-12-22 08:37:42,499 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 263 transitions. Word has length 53 [2020-12-22 08:37:42,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:42,500 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 263 transitions. [2020-12-22 08:37:42,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 08:37:42,500 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 263 transitions. [2020-12-22 08:37:42,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 08:37:42,501 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:42,501 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] [2020-12-22 08:37:42,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 08:37:42,501 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:42,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:42,502 INFO L82 PathProgramCache]: Analyzing trace with hash 576756188, now seen corresponding path program 1 times [2020-12-22 08:37:42,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:42,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133767254] [2020-12-22 08:37:42,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:42,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:43,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:43,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133767254] [2020-12-22 08:37:43,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:43,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-12-22 08:37:43,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86336159] [2020-12-22 08:37:43,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 08:37:43,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:43,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 08:37:43,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2020-12-22 08:37:43,214 INFO L87 Difference]: Start difference. First operand 207 states and 263 transitions. Second operand 18 states. [2020-12-22 08:37:43,573 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2020-12-22 08:37:44,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:44,988 INFO L93 Difference]: Finished difference Result 693 states and 969 transitions. [2020-12-22 08:37:44,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-22 08:37:44,989 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 54 [2020-12-22 08:37:44,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:44,992 INFO L225 Difference]: With dead ends: 693 [2020-12-22 08:37:44,992 INFO L226 Difference]: Without dead ends: 687 [2020-12-22 08:37:44,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=144, Invalid=668, Unknown=0, NotChecked=0, Total=812 [2020-12-22 08:37:44,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2020-12-22 08:37:45,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 201. [2020-12-22 08:37:45,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-12-22 08:37:45,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 254 transitions. [2020-12-22 08:37:45,041 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 254 transitions. Word has length 54 [2020-12-22 08:37:45,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:45,041 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 254 transitions. [2020-12-22 08:37:45,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 08:37:45,041 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 254 transitions. [2020-12-22 08:37:45,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 08:37:45,042 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:45,042 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] [2020-12-22 08:37:45,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 08:37:45,042 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:45,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:45,043 INFO L82 PathProgramCache]: Analyzing trace with hash -787967428, now seen corresponding path program 1 times [2020-12-22 08:37:45,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:45,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994588783] [2020-12-22 08:37:45,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:45,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:45,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:45,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994588783] [2020-12-22 08:37:45,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:45,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-12-22 08:37:45,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993883213] [2020-12-22 08:37:45,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 08:37:45,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:45,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 08:37:45,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-12-22 08:37:45,623 INFO L87 Difference]: Start difference. First operand 201 states and 254 transitions. Second operand 14 states. [2020-12-22 08:37:46,208 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-12-22 08:37:46,378 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2020-12-22 08:37:46,530 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2020-12-22 08:37:46,687 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-12-22 08:37:47,054 WARN L197 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2020-12-22 08:37:47,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:47,582 INFO L93 Difference]: Finished difference Result 494 states and 682 transitions. [2020-12-22 08:37:47,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 08:37:47,584 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-12-22 08:37:47,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:47,587 INFO L225 Difference]: With dead ends: 494 [2020-12-22 08:37:47,587 INFO L226 Difference]: Without dead ends: 482 [2020-12-22 08:37:47,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=161, Invalid=541, Unknown=0, NotChecked=0, Total=702 [2020-12-22 08:37:47,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-12-22 08:37:47,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 189. [2020-12-22 08:37:47,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-12-22 08:37:47,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 242 transitions. [2020-12-22 08:37:47,635 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 242 transitions. Word has length 54 [2020-12-22 08:37:47,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:47,635 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 242 transitions. [2020-12-22 08:37:47,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 08:37:47,635 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 242 transitions. [2020-12-22 08:37:47,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 08:37:47,636 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:47,636 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] [2020-12-22 08:37:47,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 08:37:47,636 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:47,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:47,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1046826158, now seen corresponding path program 1 times [2020-12-22 08:37:47,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:47,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77029830] [2020-12-22 08:37:47,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:48,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:48,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77029830] [2020-12-22 08:37:48,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:48,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-12-22 08:37:48,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012927039] [2020-12-22 08:37:48,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 08:37:48,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:48,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 08:37:48,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-12-22 08:37:48,034 INFO L87 Difference]: Start difference. First operand 189 states and 242 transitions. Second operand 13 states. [2020-12-22 08:37:48,335 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2020-12-22 08:37:49,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:49,592 INFO L93 Difference]: Finished difference Result 676 states and 948 transitions. [2020-12-22 08:37:49,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:37:49,593 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 54 [2020-12-22 08:37:49,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:49,595 INFO L225 Difference]: With dead ends: 676 [2020-12-22 08:37:49,596 INFO L226 Difference]: Without dead ends: 670 [2020-12-22 08:37:49,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:37:49,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-12-22 08:37:49,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 195. [2020-12-22 08:37:49,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-12-22 08:37:49,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 250 transitions. [2020-12-22 08:37:49,649 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 250 transitions. Word has length 54 [2020-12-22 08:37:49,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:49,649 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 250 transitions. [2020-12-22 08:37:49,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 08:37:49,649 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 250 transitions. [2020-12-22 08:37:49,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 08:37:49,650 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:49,650 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] [2020-12-22 08:37:49,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 08:37:49,650 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:49,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:49,651 INFO L82 PathProgramCache]: Analyzing trace with hash -534929533, now seen corresponding path program 1 times [2020-12-22 08:37:49,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:49,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924398044] [2020-12-22 08:37:49,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:49,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:49,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924398044] [2020-12-22 08:37:49,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:49,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-22 08:37:49,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762260066] [2020-12-22 08:37:49,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:37:49,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:49,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:37:49,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:37:49,970 INFO L87 Difference]: Start difference. First operand 195 states and 250 transitions. Second operand 11 states. [2020-12-22 08:37:50,443 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-12-22 08:37:51,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:51,146 INFO L93 Difference]: Finished difference Result 547 states and 778 transitions. [2020-12-22 08:37:51,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 08:37:51,147 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 54 [2020-12-22 08:37:51,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:51,149 INFO L225 Difference]: With dead ends: 547 [2020-12-22 08:37:51,149 INFO L226 Difference]: Without dead ends: 524 [2020-12-22 08:37:51,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=158, Invalid=394, Unknown=0, NotChecked=0, Total=552 [2020-12-22 08:37:51,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2020-12-22 08:37:51,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 172. [2020-12-22 08:37:51,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-12-22 08:37:51,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 225 transitions. [2020-12-22 08:37:51,200 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 225 transitions. Word has length 54 [2020-12-22 08:37:51,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:51,200 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 225 transitions. [2020-12-22 08:37:51,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:37:51,200 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 225 transitions. [2020-12-22 08:37:51,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 08:37:51,201 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:51,201 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] [2020-12-22 08:37:51,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 08:37:51,201 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:51,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:51,201 INFO L82 PathProgramCache]: Analyzing trace with hash -200667910, now seen corresponding path program 1 times [2020-12-22 08:37:51,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:51,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312489842] [2020-12-22 08:37:51,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:51,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:51,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312489842] [2020-12-22 08:37:51,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:51,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-22 08:37:51,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961615312] [2020-12-22 08:37:51,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:37:51,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:51,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:37:51,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:37:51,488 INFO L87 Difference]: Start difference. First operand 172 states and 225 transitions. Second operand 11 states. [2020-12-22 08:37:52,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:52,130 INFO L93 Difference]: Finished difference Result 472 states and 659 transitions. [2020-12-22 08:37:52,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 08:37:52,131 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 55 [2020-12-22 08:37:52,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:52,133 INFO L225 Difference]: With dead ends: 472 [2020-12-22 08:37:52,133 INFO L226 Difference]: Without dead ends: 466 [2020-12-22 08:37:52,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:37:52,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-12-22 08:37:52,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 160. [2020-12-22 08:37:52,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-12-22 08:37:52,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 211 transitions. [2020-12-22 08:37:52,187 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 211 transitions. Word has length 55 [2020-12-22 08:37:52,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:52,187 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 211 transitions. [2020-12-22 08:37:52,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:37:52,188 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 211 transitions. [2020-12-22 08:37:52,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 08:37:52,188 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:52,189 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] [2020-12-22 08:37:52,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 08:37:52,189 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:52,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:52,189 INFO L82 PathProgramCache]: Analyzing trace with hash 415256315, now seen corresponding path program 1 times [2020-12-22 08:37:52,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:52,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640355072] [2020-12-22 08:37:52,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:52,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:52,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:52,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640355072] [2020-12-22 08:37:52,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:52,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:37:52,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422254598] [2020-12-22 08:37:52,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:37:52,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:52,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:37:52,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:37:52,239 INFO L87 Difference]: Start difference. First operand 160 states and 211 transitions. Second operand 3 states. [2020-12-22 08:37:52,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:52,364 INFO L93 Difference]: Finished difference Result 320 states and 451 transitions. [2020-12-22 08:37:52,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:37:52,364 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-22 08:37:52,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:52,366 INFO L225 Difference]: With dead ends: 320 [2020-12-22 08:37:52,366 INFO L226 Difference]: Without dead ends: 236 [2020-12-22 08:37:52,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:37:52,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-12-22 08:37:52,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 234. [2020-12-22 08:37:52,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-12-22 08:37:52,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 320 transitions. [2020-12-22 08:37:52,456 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 320 transitions. Word has length 71 [2020-12-22 08:37:52,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:52,457 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 320 transitions. [2020-12-22 08:37:52,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:37:52,457 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 320 transitions. [2020-12-22 08:37:52,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 08:37:52,458 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:52,458 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] [2020-12-22 08:37:52,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 08:37:52,459 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:52,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:52,459 INFO L82 PathProgramCache]: Analyzing trace with hash -237734748, now seen corresponding path program 1 times [2020-12-22 08:37:52,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:52,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893100626] [2020-12-22 08:37:52,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:52,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:52,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:52,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893100626] [2020-12-22 08:37:52,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:52,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:37:52,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932915830] [2020-12-22 08:37:52,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:37:52,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:52,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:37:52,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:37:52,538 INFO L87 Difference]: Start difference. First operand 234 states and 320 transitions. Second operand 5 states. [2020-12-22 08:37:52,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:52,907 INFO L93 Difference]: Finished difference Result 744 states and 1084 transitions. [2020-12-22 08:37:52,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:37:52,908 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-12-22 08:37:52,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:52,911 INFO L225 Difference]: With dead ends: 744 [2020-12-22 08:37:52,911 INFO L226 Difference]: Without dead ends: 586 [2020-12-22 08:37:52,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:37:52,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-12-22 08:37:53,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 316. [2020-12-22 08:37:53,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-12-22 08:37:53,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 445 transitions. [2020-12-22 08:37:53,059 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 445 transitions. Word has length 73 [2020-12-22 08:37:53,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:53,059 INFO L481 AbstractCegarLoop]: Abstraction has 316 states and 445 transitions. [2020-12-22 08:37:53,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:37:53,059 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 445 transitions. [2020-12-22 08:37:53,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 08:37:53,060 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:53,061 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] [2020-12-22 08:37:53,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 08:37:53,061 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:53,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:53,061 INFO L82 PathProgramCache]: Analyzing trace with hash -871401261, now seen corresponding path program 1 times [2020-12-22 08:37:53,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:53,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154174880] [2020-12-22 08:37:53,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:53,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:53,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154174880] [2020-12-22 08:37:53,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:53,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:37:53,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248733588] [2020-12-22 08:37:53,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:37:53,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:53,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:37:53,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:37:53,118 INFO L87 Difference]: Start difference. First operand 316 states and 445 transitions. Second operand 3 states. [2020-12-22 08:37:53,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:53,391 INFO L93 Difference]: Finished difference Result 722 states and 1058 transitions. [2020-12-22 08:37:53,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:37:53,392 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-22 08:37:53,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:53,394 INFO L225 Difference]: With dead ends: 722 [2020-12-22 08:37:53,394 INFO L226 Difference]: Without dead ends: 482 [2020-12-22 08:37:53,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:37:53,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-12-22 08:37:53,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 480. [2020-12-22 08:37:53,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 480 states. [2020-12-22 08:37:53,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 687 transitions. [2020-12-22 08:37:53,606 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 687 transitions. Word has length 73 [2020-12-22 08:37:53,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:53,606 INFO L481 AbstractCegarLoop]: Abstraction has 480 states and 687 transitions. [2020-12-22 08:37:53,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:37:53,606 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 687 transitions. [2020-12-22 08:37:53,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 08:37:53,607 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:53,607 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] [2020-12-22 08:37:53,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 08:37:53,608 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:53,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:53,608 INFO L82 PathProgramCache]: Analyzing trace with hash -937894773, now seen corresponding path program 1 times [2020-12-22 08:37:53,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:53,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174723686] [2020-12-22 08:37:53,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:53,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:53,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174723686] [2020-12-22 08:37:53,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:53,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:37:53,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950173247] [2020-12-22 08:37:53,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:37:53,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:53,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:37:53,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:37:53,659 INFO L87 Difference]: Start difference. First operand 480 states and 687 transitions. Second operand 3 states. [2020-12-22 08:37:53,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:53,992 INFO L93 Difference]: Finished difference Result 1228 states and 1793 transitions. [2020-12-22 08:37:53,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:37:53,993 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-22 08:37:53,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:53,996 INFO L225 Difference]: With dead ends: 1228 [2020-12-22 08:37:53,996 INFO L226 Difference]: Without dead ends: 824 [2020-12-22 08:37:53,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:37:53,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2020-12-22 08:37:54,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 812. [2020-12-22 08:37:54,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 812 states. [2020-12-22 08:37:54,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1156 transitions. [2020-12-22 08:37:54,301 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1156 transitions. Word has length 73 [2020-12-22 08:37:54,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:54,301 INFO L481 AbstractCegarLoop]: Abstraction has 812 states and 1156 transitions. [2020-12-22 08:37:54,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:37:54,301 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1156 transitions. [2020-12-22 08:37:54,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 08:37:54,302 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:54,302 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] [2020-12-22 08:37:54,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 08:37:54,303 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:54,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:54,303 INFO L82 PathProgramCache]: Analyzing trace with hash -852412764, now seen corresponding path program 1 times [2020-12-22 08:37:54,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:54,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058228028] [2020-12-22 08:37:54,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:54,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:54,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:54,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058228028] [2020-12-22 08:37:54,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:54,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:37:54,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393919461] [2020-12-22 08:37:54,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:37:54,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:54,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:37:54,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:37:54,379 INFO L87 Difference]: Start difference. First operand 812 states and 1156 transitions. Second operand 5 states. [2020-12-22 08:37:55,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:55,048 INFO L93 Difference]: Finished difference Result 2152 states and 3102 transitions. [2020-12-22 08:37:55,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:37:55,049 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-12-22 08:37:55,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:55,055 INFO L225 Difference]: With dead ends: 2152 [2020-12-22 08:37:55,056 INFO L226 Difference]: Without dead ends: 1714 [2020-12-22 08:37:55,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:37:55,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2020-12-22 08:37:55,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 1260. [2020-12-22 08:37:55,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1260 states. [2020-12-22 08:37:55,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 1806 transitions. [2020-12-22 08:37:55,598 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 1806 transitions. Word has length 73 [2020-12-22 08:37:55,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:55,598 INFO L481 AbstractCegarLoop]: Abstraction has 1260 states and 1806 transitions. [2020-12-22 08:37:55,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:37:55,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 1806 transitions. [2020-12-22 08:37:55,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 08:37:55,600 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:55,600 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] [2020-12-22 08:37:55,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 08:37:55,600 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:55,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:55,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1459706699, now seen corresponding path program 1 times [2020-12-22 08:37:55,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:55,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821064344] [2020-12-22 08:37:55,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:55,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:55,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821064344] [2020-12-22 08:37:55,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:55,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:37:55,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982161276] [2020-12-22 08:37:55,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:37:55,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:55,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:37:55,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:37:55,639 INFO L87 Difference]: Start difference. First operand 1260 states and 1806 transitions. Second operand 3 states. [2020-12-22 08:37:56,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:56,263 INFO L93 Difference]: Finished difference Result 2848 states and 4117 transitions. [2020-12-22 08:37:56,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:37:56,263 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-12-22 08:37:56,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:56,269 INFO L225 Difference]: With dead ends: 2848 [2020-12-22 08:37:56,269 INFO L226 Difference]: Without dead ends: 1664 [2020-12-22 08:37:56,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:37:56,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2020-12-22 08:37:56,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1644. [2020-12-22 08:37:56,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1644 states. [2020-12-22 08:37:56,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1644 states to 1644 states and 2345 transitions. [2020-12-22 08:37:56,947 INFO L78 Accepts]: Start accepts. Automaton has 1644 states and 2345 transitions. Word has length 74 [2020-12-22 08:37:56,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:56,947 INFO L481 AbstractCegarLoop]: Abstraction has 1644 states and 2345 transitions. [2020-12-22 08:37:56,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:37:56,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1644 states and 2345 transitions. [2020-12-22 08:37:56,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 08:37:56,948 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:56,949 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] [2020-12-22 08:37:56,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-22 08:37:56,949 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:56,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:56,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1468955342, now seen corresponding path program 1 times [2020-12-22 08:37:56,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:56,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376208605] [2020-12-22 08:37:56,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:57,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:57,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376208605] [2020-12-22 08:37:57,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:57,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:37:57,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658355131] [2020-12-22 08:37:57,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:37:57,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:57,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:37:57,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:37:57,022 INFO L87 Difference]: Start difference. First operand 1644 states and 2345 transitions. Second operand 5 states. [2020-12-22 08:37:58,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:58,013 INFO L93 Difference]: Finished difference Result 3268 states and 4693 transitions. [2020-12-22 08:37:58,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:37:58,014 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-12-22 08:37:58,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:58,022 INFO L225 Difference]: With dead ends: 3268 [2020-12-22 08:37:58,023 INFO L226 Difference]: Without dead ends: 2676 [2020-12-22 08:37:58,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:37:58,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2676 states. [2020-12-22 08:37:58,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2676 to 2034. [2020-12-22 08:37:58,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2034 states. [2020-12-22 08:37:58,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2034 states to 2034 states and 2907 transitions. [2020-12-22 08:37:58,815 INFO L78 Accepts]: Start accepts. Automaton has 2034 states and 2907 transitions. Word has length 74 [2020-12-22 08:37:58,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:58,815 INFO L481 AbstractCegarLoop]: Abstraction has 2034 states and 2907 transitions. [2020-12-22 08:37:58,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:37:58,815 INFO L276 IsEmpty]: Start isEmpty. Operand 2034 states and 2907 transitions. [2020-12-22 08:37:58,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 08:37:58,816 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:58,816 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] [2020-12-22 08:37:58,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-22 08:37:58,817 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:58,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:58,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1631844587, now seen corresponding path program 1 times [2020-12-22 08:37:58,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:58,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015107281] [2020-12-22 08:37:58,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:58,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:58,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015107281] [2020-12-22 08:37:58,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:58,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:37:58,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631164900] [2020-12-22 08:37:58,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:37:58,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:58,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:37:58,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:37:58,867 INFO L87 Difference]: Start difference. First operand 2034 states and 2907 transitions. Second operand 3 states. [2020-12-22 08:38:00,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:38:00,469 INFO L93 Difference]: Finished difference Result 5710 states and 8135 transitions. [2020-12-22 08:38:00,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:38:00,470 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-12-22 08:38:00,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:38:00,484 INFO L225 Difference]: With dead ends: 5710 [2020-12-22 08:38:00,484 INFO L226 Difference]: Without dead ends: 3752 [2020-12-22 08:38:00,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:38:00,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3752 states. [2020-12-22 08:38:01,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3752 to 3510. [2020-12-22 08:38:01,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3510 states. [2020-12-22 08:38:01,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3510 states to 3510 states and 4950 transitions. [2020-12-22 08:38:01,778 INFO L78 Accepts]: Start accepts. Automaton has 3510 states and 4950 transitions. Word has length 74 [2020-12-22 08:38:01,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:38:01,778 INFO L481 AbstractCegarLoop]: Abstraction has 3510 states and 4950 transitions. [2020-12-22 08:38:01,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:38:01,778 INFO L276 IsEmpty]: Start isEmpty. Operand 3510 states and 4950 transitions. [2020-12-22 08:38:01,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 08:38:01,779 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:38:01,779 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] [2020-12-22 08:38:01,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-22 08:38:01,779 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:38:01,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:38:01,780 INFO L82 PathProgramCache]: Analyzing trace with hash -536068422, now seen corresponding path program 1 times [2020-12-22 08:38:01,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:38:01,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498019786] [2020-12-22 08:38:01,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:38:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:38:01,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:38:01,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498019786] [2020-12-22 08:38:01,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:38:01,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:38:01,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988658765] [2020-12-22 08:38:01,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:38:01,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:38:01,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:38:01,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:38:01,824 INFO L87 Difference]: Start difference. First operand 3510 states and 4950 transitions. Second operand 3 states. [2020-12-22 08:38:04,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:38:04,332 INFO L93 Difference]: Finished difference Result 9898 states and 13844 transitions. [2020-12-22 08:38:04,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:38:04,333 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-12-22 08:38:04,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:38:04,359 INFO L225 Difference]: With dead ends: 9898 [2020-12-22 08:38:04,359 INFO L226 Difference]: Without dead ends: 6464 [2020-12-22 08:38:04,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:38:04,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6464 states. [2020-12-22 08:38:06,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6464 to 5982. [2020-12-22 08:38:06,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5982 states. [2020-12-22 08:38:06,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5982 states to 5982 states and 8256 transitions. [2020-12-22 08:38:06,699 INFO L78 Accepts]: Start accepts. Automaton has 5982 states and 8256 transitions. Word has length 75 [2020-12-22 08:38:06,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:38:06,700 INFO L481 AbstractCegarLoop]: Abstraction has 5982 states and 8256 transitions. [2020-12-22 08:38:06,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:38:06,700 INFO L276 IsEmpty]: Start isEmpty. Operand 5982 states and 8256 transitions. [2020-12-22 08:38:06,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 08:38:06,701 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:38:06,701 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] [2020-12-22 08:38:06,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-22 08:38:06,702 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:38:06,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:38:06,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1852091383, now seen corresponding path program 1 times [2020-12-22 08:38:06,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:38:06,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705719794] [2020-12-22 08:38:06,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:38:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:38:06,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:38:06,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705719794] [2020-12-22 08:38:06,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:38:06,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:38:06,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143351289] [2020-12-22 08:38:06,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:38:06,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:38:06,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:38:06,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:38:06,801 INFO L87 Difference]: Start difference. First operand 5982 states and 8256 transitions. Second operand 6 states. [2020-12-22 08:38:10,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:38:10,671 INFO L93 Difference]: Finished difference Result 9282 states and 12692 transitions. [2020-12-22 08:38:10,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:38:10,672 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-12-22 08:38:10,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:38:10,689 INFO L225 Difference]: With dead ends: 9282 [2020-12-22 08:38:10,689 INFO L226 Difference]: Without dead ends: 9280 [2020-12-22 08:38:10,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:38:10,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9280 states. [2020-12-22 08:38:13,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9280 to 6078. [2020-12-22 08:38:13,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6078 states. [2020-12-22 08:38:13,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6078 states to 6078 states and 8312 transitions. [2020-12-22 08:38:13,127 INFO L78 Accepts]: Start accepts. Automaton has 6078 states and 8312 transitions. Word has length 76 [2020-12-22 08:38:13,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:38:13,127 INFO L481 AbstractCegarLoop]: Abstraction has 6078 states and 8312 transitions. [2020-12-22 08:38:13,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:38:13,127 INFO L276 IsEmpty]: Start isEmpty. Operand 6078 states and 8312 transitions. [2020-12-22 08:38:13,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 08:38:13,129 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:38:13,129 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] [2020-12-22 08:38:13,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-12-22 08:38:13,130 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:38:13,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:38:13,130 INFO L82 PathProgramCache]: Analyzing trace with hash -966335138, now seen corresponding path program 1 times [2020-12-22 08:38:13,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:38:13,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044528490] [2020-12-22 08:38:13,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:38:13,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:38:13,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:38:13,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044528490] [2020-12-22 08:38:13,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:38:13,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:38:13,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550613838] [2020-12-22 08:38:13,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:38:13,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:38:13,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:38:13,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:38:13,197 INFO L87 Difference]: Start difference. First operand 6078 states and 8312 transitions. Second operand 3 states. [2020-12-22 08:38:16,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:38:16,426 INFO L93 Difference]: Finished difference Result 13922 states and 18994 transitions. [2020-12-22 08:38:16,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:38:16,427 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 08:38:16,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:38:16,442 INFO L225 Difference]: With dead ends: 13922 [2020-12-22 08:38:16,443 INFO L226 Difference]: Without dead ends: 7920 [2020-12-22 08:38:16,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:38:16,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7920 states. [2020-12-22 08:38:19,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7920 to 7310. [2020-12-22 08:38:19,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7310 states. [2020-12-22 08:38:19,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7310 states to 7310 states and 9776 transitions. [2020-12-22 08:38:19,523 INFO L78 Accepts]: Start accepts. Automaton has 7310 states and 9776 transitions. Word has length 77 [2020-12-22 08:38:19,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:38:19,523 INFO L481 AbstractCegarLoop]: Abstraction has 7310 states and 9776 transitions. [2020-12-22 08:38:19,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:38:19,524 INFO L276 IsEmpty]: Start isEmpty. Operand 7310 states and 9776 transitions. [2020-12-22 08:38:19,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 08:38:19,526 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:38:19,526 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] [2020-12-22 08:38:19,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-12-22 08:38:19,529 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:38:19,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:38:19,530 INFO L82 PathProgramCache]: Analyzing trace with hash 914913403, now seen corresponding path program 1 times [2020-12-22 08:38:19,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:38:19,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11917729] [2020-12-22 08:38:19,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:38:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:38:19,727 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-22 08:38:19,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11917729] [2020-12-22 08:38:19,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:38:19,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 08:38:19,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424669660] [2020-12-22 08:38:19,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:38:19,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:38:19,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:38:19,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:38:19,729 INFO L87 Difference]: Start difference. First operand 7310 states and 9776 transitions. Second operand 11 states. [2020-12-22 08:38:36,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:38:36,324 INFO L93 Difference]: Finished difference Result 41992 states and 55558 transitions. [2020-12-22 08:38:36,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-22 08:38:36,325 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-12-22 08:38:36,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:38:36,385 INFO L225 Difference]: With dead ends: 41992 [2020-12-22 08:38:36,385 INFO L226 Difference]: Without dead ends: 34746 [2020-12-22 08:38:36,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=342, Invalid=1064, Unknown=0, NotChecked=0, Total=1406 [2020-12-22 08:38:36,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34746 states. [2020-12-22 08:38:39,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34746 to 7318. [2020-12-22 08:38:39,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7318 states. [2020-12-22 08:38:39,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7318 states to 7318 states and 9784 transitions. [2020-12-22 08:38:39,907 INFO L78 Accepts]: Start accepts. Automaton has 7318 states and 9784 transitions. Word has length 98 [2020-12-22 08:38:39,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:38:39,907 INFO L481 AbstractCegarLoop]: Abstraction has 7318 states and 9784 transitions. [2020-12-22 08:38:39,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:38:39,907 INFO L276 IsEmpty]: Start isEmpty. Operand 7318 states and 9784 transitions. [2020-12-22 08:38:39,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 08:38:39,909 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:38:39,909 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] [2020-12-22 08:38:39,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-12-22 08:38:39,910 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:38:39,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:38:39,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1709276203, now seen corresponding path program 1 times [2020-12-22 08:38:39,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:38:39,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86037689] [2020-12-22 08:38:39,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:38:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:38:40,033 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-22 08:38:40,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86037689] [2020-12-22 08:38:40,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:38:40,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:38:40,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967031761] [2020-12-22 08:38:40,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:38:40,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:38:40,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:38:40,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:38:40,035 INFO L87 Difference]: Start difference. First operand 7318 states and 9784 transitions. Second operand 9 states. [2020-12-22 08:38:46,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:38:46,678 INFO L93 Difference]: Finished difference Result 22064 states and 29450 transitions. [2020-12-22 08:38:46,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 08:38:46,679 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2020-12-22 08:38:46,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:38:46,713 INFO L225 Difference]: With dead ends: 22064 [2020-12-22 08:38:46,713 INFO L226 Difference]: Without dead ends: 14818 [2020-12-22 08:38:46,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2020-12-22 08:38:46,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14818 states. [2020-12-22 08:38:50,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14818 to 7310. [2020-12-22 08:38:50,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7310 states. [2020-12-22 08:38:50,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7310 states to 7310 states and 9774 transitions. [2020-12-22 08:38:50,097 INFO L78 Accepts]: Start accepts. Automaton has 7310 states and 9774 transitions. Word has length 99 [2020-12-22 08:38:50,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:38:50,097 INFO L481 AbstractCegarLoop]: Abstraction has 7310 states and 9774 transitions. [2020-12-22 08:38:50,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:38:50,097 INFO L276 IsEmpty]: Start isEmpty. Operand 7310 states and 9774 transitions. [2020-12-22 08:38:50,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-22 08:38:50,100 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:38:50,100 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] [2020-12-22 08:38:50,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-12-22 08:38:50,101 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:38:50,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:38:50,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1310697750, now seen corresponding path program 1 times [2020-12-22 08:38:50,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:38:50,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661728219] [2020-12-22 08:38:50,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:38:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:38:50,387 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:38:50,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661728219] [2020-12-22 08:38:50,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795503010] [2020-12-22 08:38:50,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 08:38:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:38:50,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 08:38:50,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 08:38:51,018 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 08:38:51,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 08:38:51,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 14 [2020-12-22 08:38:51,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843272799] [2020-12-22 08:38:51,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 08:38:51,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:38:51,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 08:38:51,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-12-22 08:38:51,021 INFO L87 Difference]: Start difference. First operand 7310 states and 9774 transitions. Second operand 14 states. [2020-12-22 08:38:52,782 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2020-12-22 08:38:53,701 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2020-12-22 08:38:57,351 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2020-12-22 08:38:58,118 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2020-12-22 08:38:58,935 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2020-12-22 08:39:01,657 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2020-12-22 08:39:04,095 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2020-12-22 08:39:04,404 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2020-12-22 08:39:05,052 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2020-12-22 08:39:24,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:39:24,164 INFO L93 Difference]: Finished difference Result 50260 states and 65858 transitions. [2020-12-22 08:39:24,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2020-12-22 08:39:24,165 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 100 [2020-12-22 08:39:24,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:39:24,256 INFO L225 Difference]: With dead ends: 50260 [2020-12-22 08:39:24,257 INFO L226 Difference]: Without dead ends: 43026 [2020-12-22 08:39:24,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4284 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=1674, Invalid=9456, Unknown=0, NotChecked=0, Total=11130 [2020-12-22 08:39:24,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43026 states. [2020-12-22 08:39:33,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43026 to 17294. [2020-12-22 08:39:33,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17294 states. [2020-12-22 08:39:33,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17294 states to 17294 states and 23029 transitions. [2020-12-22 08:39:33,652 INFO L78 Accepts]: Start accepts. Automaton has 17294 states and 23029 transitions. Word has length 100 [2020-12-22 08:39:33,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:39:33,652 INFO L481 AbstractCegarLoop]: Abstraction has 17294 states and 23029 transitions. [2020-12-22 08:39:33,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 08:39:33,653 INFO L276 IsEmpty]: Start isEmpty. Operand 17294 states and 23029 transitions. [2020-12-22 08:39:33,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-22 08:39:33,657 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:39:33,657 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 08:39:33,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-12-22 08:39:33,874 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:39:33,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:39:33,875 INFO L82 PathProgramCache]: Analyzing trace with hash -2089944216, now seen corresponding path program 1 times [2020-12-22 08:39:33,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:39:33,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820468611] [2020-12-22 08:39:33,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:39:33,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:39:33,945 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:39:33,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820468611] [2020-12-22 08:39:33,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:39:33,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:39:33,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48400726] [2020-12-22 08:39:33,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:39:33,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:39:33,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:39:33,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:39:33,948 INFO L87 Difference]: Start difference. First operand 17294 states and 23029 transitions. Second operand 3 states. [2020-12-22 08:39:40,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:39:40,265 INFO L93 Difference]: Finished difference Result 29815 states and 39652 transitions. [2020-12-22 08:39:40,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:39:40,266 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2020-12-22 08:39:40,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:39:40,295 INFO L225 Difference]: With dead ends: 29815 [2020-12-22 08:39:40,295 INFO L226 Difference]: Without dead ends: 12601 [2020-12-22 08:39:40,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:39:40,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12601 states. [2020-12-22 08:39:46,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12601 to 12549. [2020-12-22 08:39:46,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12549 states. [2020-12-22 08:39:46,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12549 states to 12549 states and 16354 transitions. [2020-12-22 08:39:46,963 INFO L78 Accepts]: Start accepts. Automaton has 12549 states and 16354 transitions. Word has length 100 [2020-12-22 08:39:46,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:39:46,963 INFO L481 AbstractCegarLoop]: Abstraction has 12549 states and 16354 transitions. [2020-12-22 08:39:46,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:39:46,963 INFO L276 IsEmpty]: Start isEmpty. Operand 12549 states and 16354 transitions. [2020-12-22 08:39:46,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-22 08:39:46,965 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:39:46,966 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 08:39:46,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-12-22 08:39:46,966 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:39:46,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:39:46,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1949073466, now seen corresponding path program 1 times [2020-12-22 08:39:46,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:39:46,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748508974] [2020-12-22 08:39:46,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:39:46,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:39:47,294 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:39:47,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748508974] [2020-12-22 08:39:47,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226644574] [2020-12-22 08:39:47,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 08:39:47,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:39:47,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 08:39:47,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 08:39:47,947 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 08:39:48,388 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 08:39:48,507 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:39:48,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 08:39:48,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2020-12-22 08:39:48,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916394301] [2020-12-22 08:39:48,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-22 08:39:48,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:39:48,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-22 08:39:48,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2020-12-22 08:39:48,510 INFO L87 Difference]: Start difference. First operand 12549 states and 16354 transitions. Second operand 20 states. [2020-12-22 08:39:49,038 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2020-12-22 08:39:49,213 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2020-12-22 08:39:49,617 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-12-22 08:39:49,784 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-12-22 08:39:50,015 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-12-22 08:39:50,148 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-12-22 08:39:50,543 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-12-22 08:39:50,991 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-12-22 08:39:51,315 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-12-22 08:39:51,656 WARN L197 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-22 08:39:52,118 WARN L197 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-12-22 08:39:52,514 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-12-22 08:39:52,748 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-12-22 08:39:53,141 WARN L197 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-12-22 08:39:53,449 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-12-22 08:39:53,672 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-12-22 08:39:53,864 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-12-22 08:39:54,146 WARN L197 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-12-22 08:39:54,729 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2020-12-22 08:39:55,155 WARN L197 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-12-22 08:39:55,555 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-12-22 08:39:59,007 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-12-22 08:39:59,422 WARN L197 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-12-22 08:39:59,932 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-22 08:40:00,251 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-22 08:40:00,674 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-12-22 08:40:00,873 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-12-22 08:40:01,170 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-12-22 08:40:01,639 WARN L197 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-12-22 08:40:02,112 WARN L197 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-12-22 08:40:02,373 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2020-12-22 08:40:02,847 WARN L197 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-22 08:40:03,172 WARN L197 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-12-22 08:40:04,298 WARN L197 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-12-22 08:40:05,246 WARN L197 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-12-22 08:40:41,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:41,616 INFO L93 Difference]: Finished difference Result 80334 states and 103292 transitions. [2020-12-22 08:40:41,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-12-22 08:40:41,617 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 101 [2020-12-22 08:40:41,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:41,698 INFO L225 Difference]: With dead ends: 80334 [2020-12-22 08:40:41,699 INFO L226 Difference]: Without dead ends: 68359 [2020-12-22 08:40:41,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 91 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=929, Invalid=2493, Unknown=0, NotChecked=0, Total=3422 [2020-12-22 08:40:41,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68359 states. [2020-12-22 08:40:59,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68359 to 30621. [2020-12-22 08:40:59,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30621 states. [2020-12-22 08:40:59,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30621 states to 30621 states and 39855 transitions. [2020-12-22 08:40:59,236 INFO L78 Accepts]: Start accepts. Automaton has 30621 states and 39855 transitions. Word has length 101 [2020-12-22 08:40:59,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:59,237 INFO L481 AbstractCegarLoop]: Abstraction has 30621 states and 39855 transitions. [2020-12-22 08:40:59,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-22 08:40:59,237 INFO L276 IsEmpty]: Start isEmpty. Operand 30621 states and 39855 transitions. [2020-12-22 08:40:59,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-22 08:40:59,240 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:59,241 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 08:40:59,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 08:40:59,452 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:59,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:59,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1968061963, now seen corresponding path program 1 times [2020-12-22 08:40:59,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:59,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161494498] [2020-12-22 08:40:59,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:59,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:59,931 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 08:40:59,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161494498] [2020-12-22 08:40:59,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:59,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-12-22 08:40:59,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302731348] [2020-12-22 08:40:59,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 08:40:59,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:59,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 08:40:59,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-12-22 08:40:59,933 INFO L87 Difference]: Start difference. First operand 30621 states and 39855 transitions. Second operand 16 states. [2020-12-22 08:41:00,078 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-12-22 08:41:00,608 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45