/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:51:49,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:51:49,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:51:49,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 04:51:49,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 04:51:49,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 04:51:49,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 04:51:49,087 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 04:51:49,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 04:51:49,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 04:51:49,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 04:51:49,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 04:51:49,095 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:51:49,096 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:51:49,098 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:51:49,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:51:49,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:51:49,102 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:51:49,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:51:49,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:51:49,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:51:49,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:51:49,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:51:49,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:51:49,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 04:51:49,122 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 04:51:49,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 04:51:49,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 04:51:49,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 04:51:49,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 04:51:49,149 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 04:51:49,153 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 04:51:49,154 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 04:51:49,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:51:49,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:51:49,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:51:49,159 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:51:49,174 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:51:49,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:51:49,176 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:51:49,177 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:51:49,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:51:49,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:51:49,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:51:49,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:51:49,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:51:49,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:51:49,178 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:51:49,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:51:49,179 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:51:49,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:51:49,179 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:51:49,180 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:51:49,180 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:51:49,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:51:49,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:51:49,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:51:49,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:51:49,181 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:51:49,181 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:51:49,182 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:51:49,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:51:49,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:51:49,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:51:49,735 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:51:49,736 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:51:49,738 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-02-24 04:51:49,847 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08af50420/e431b08b64844d1c9bb9091ddfb24648/FLAG86d38fe79 [2021-02-24 04:51:50,914 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:51:50,915 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-02-24 04:51:50,939 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08af50420/e431b08b64844d1c9bb9091ddfb24648/FLAG86d38fe79 [2021-02-24 04:51:50,958 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08af50420/e431b08b64844d1c9bb9091ddfb24648 [2021-02-24 04:51:50,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:51:50,978 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:51:50,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:51:50,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:51:50,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:51:50,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:51:50" (1/1) ... [2021-02-24 04:51:50,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@df395fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:51:50, skipping insertion in model container [2021-02-24 04:51:50,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:51:50" (1/1) ... [2021-02-24 04:51:50,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:51:51,100 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:51:51,729 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[13594,13607] [2021-02-24 04:51:51,754 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14241,14254] [2021-02-24 04:51:51,790 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15474,15487] [2021-02-24 04:51:51,841 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[16534,16547] [2021-02-24 04:51:52,001 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[24925,24938] [2021-02-24 04:51:52,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:51:52,205 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:51:52,315 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[13594,13607] [2021-02-24 04:51:52,326 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14241,14254] [2021-02-24 04:51:52,344 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15474,15487] [2021-02-24 04:51:52,361 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[16534,16547] [2021-02-24 04:51:52,445 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[24925,24938] [2021-02-24 04:51:52,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:51:52,538 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:51:52,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:51:52 WrapperNode [2021-02-24 04:51:52,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:51:52,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:51:52,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:51:52,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:51:52,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:51:52" (1/1) ... [2021-02-24 04:51:52,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:51:52" (1/1) ... [2021-02-24 04:51:52,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:51:52" (1/1) ... [2021-02-24 04:51:52,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:51:52" (1/1) ... [2021-02-24 04:51:52,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:51:52" (1/1) ... [2021-02-24 04:51:52,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:51:52" (1/1) ... [2021-02-24 04:51:52,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:51:52" (1/1) ... [2021-02-24 04:51:52,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:51:52,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:51:52,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:51:52,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:51:52,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:51:52" (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 [2021-02-24 04:51:52,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:51:52,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:51:52,895 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:51:52,895 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 04:51:52,895 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:51:52,896 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:51:52,896 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:51:52,896 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:51:52,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:51:52,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-02-24 04:51:52,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-02-24 04:51:52,897 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-02-24 04:51:52,897 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 04:51:52,897 INFO L130 BoogieDeclarations]: Found specification of procedure read [2021-02-24 04:51:52,897 INFO L130 BoogieDeclarations]: Found specification of procedure write [2021-02-24 04:51:52,898 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2021-02-24 04:51:52,898 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2021-02-24 04:51:52,898 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2021-02-24 04:51:52,898 INFO L130 BoogieDeclarations]: Found specification of procedure init [2021-02-24 04:51:52,898 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-02-24 04:51:52,898 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:51:52,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:51:52,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:51:52,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:51:52,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:51:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:51:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:51:55,350 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:51:55,351 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-24 04:51:55,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:51:55 BoogieIcfgContainer [2021-02-24 04:51:55,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:51:55,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:51:55,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:51:55,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:51:55,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:51:50" (1/3) ... [2021-02-24 04:51:55,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c315827 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:51:55, skipping insertion in model container [2021-02-24 04:51:55,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:51:52" (2/3) ... [2021-02-24 04:51:55,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c315827 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:51:55, skipping insertion in model container [2021-02-24 04:51:55,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:51:55" (3/3) ... [2021-02-24 04:51:55,367 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-02-24 04:51:55,376 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:51:55,384 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2021-02-24 04:51:55,407 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-02-24 04:51:55,437 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:51:55,437 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:51:55,438 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:51:55,438 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:51:55,438 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:51:55,438 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:51:55,438 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:51:55,438 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:51:55,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states. [2021-02-24 04:51:55,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2021-02-24 04:51:55,541 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:51:55,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:51:55,544 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:51:55,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:51:55,552 INFO L82 PathProgramCache]: Analyzing trace with hash -966048575, now seen corresponding path program 1 times [2021-02-24 04:51:55,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:51:55,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816960824] [2021-02-24 04:51:55,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:51:55,662 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:51:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:51:56,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:56,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:51:56,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:56,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:51:56,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:56,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:51:56,939 WARN L202 SmtUtils]: Spent 470.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2021-02-24 04:51:56,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:51:56,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:51:56,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:56,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:51:57,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:51:57,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816960824] [2021-02-24 04:51:57,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:51:57,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:51:57,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279710311] [2021-02-24 04:51:57,328 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:51:57,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:51:57,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:51:57,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:51:57,350 INFO L87 Difference]: Start difference. First operand 1135 states. Second operand 4 states. [2021-02-24 04:52:02,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:52:02,564 INFO L93 Difference]: Finished difference Result 1841 states and 2368 transitions. [2021-02-24 04:52:02,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:52:02,566 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 431 [2021-02-24 04:52:02,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:52:02,607 INFO L225 Difference]: With dead ends: 1841 [2021-02-24 04:52:02,608 INFO L226 Difference]: Without dead ends: 1311 [2021-02-24 04:52:02,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:52:02,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2021-02-24 04:52:02,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1304. [2021-02-24 04:52:02,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1304 states. [2021-02-24 04:52:02,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 1553 transitions. [2021-02-24 04:52:02,807 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 1553 transitions. Word has length 431 [2021-02-24 04:52:02,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:52:02,814 INFO L480 AbstractCegarLoop]: Abstraction has 1304 states and 1553 transitions. [2021-02-24 04:52:02,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:52:02,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 1553 transitions. [2021-02-24 04:52:02,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2021-02-24 04:52:02,835 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:52:02,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:52:02,837 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:52:02,838 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:52:02,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:52:02,840 INFO L82 PathProgramCache]: Analyzing trace with hash 276539329, now seen corresponding path program 1 times [2021-02-24 04:52:02,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:52:02,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115724230] [2021-02-24 04:52:02,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:52:02,853 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:52:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:52:03,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:03,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:03,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:03,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:52:03,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:03,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:03,614 WARN L202 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2021-02-24 04:52:03,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:52:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:52:03,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:03,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:03,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:52:03,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115724230] [2021-02-24 04:52:03,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:52:03,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:52:03,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818666300] [2021-02-24 04:52:03,939 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:52:03,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:52:03,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:52:03,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:52:03,941 INFO L87 Difference]: Start difference. First operand 1304 states and 1553 transitions. Second operand 4 states. [2021-02-24 04:52:08,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:52:08,803 INFO L93 Difference]: Finished difference Result 2368 states and 2917 transitions. [2021-02-24 04:52:08,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:52:08,804 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 431 [2021-02-24 04:52:08,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:52:08,818 INFO L225 Difference]: With dead ends: 2368 [2021-02-24 04:52:08,819 INFO L226 Difference]: Without dead ends: 1928 [2021-02-24 04:52:08,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:52:08,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1928 states. [2021-02-24 04:52:08,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1928 to 1916. [2021-02-24 04:52:08,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1916 states. [2021-02-24 04:52:08,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2337 transitions. [2021-02-24 04:52:08,930 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2337 transitions. Word has length 431 [2021-02-24 04:52:08,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:52:08,931 INFO L480 AbstractCegarLoop]: Abstraction has 1916 states and 2337 transitions. [2021-02-24 04:52:08,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:52:08,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2337 transitions. [2021-02-24 04:52:08,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2021-02-24 04:52:08,945 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:52:08,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:52:08,946 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 04:52:08,946 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:52:08,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:52:08,947 INFO L82 PathProgramCache]: Analyzing trace with hash -525678495, now seen corresponding path program 1 times [2021-02-24 04:52:08,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:52:08,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409179603] [2021-02-24 04:52:08,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:52:08,953 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:52:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:52:09,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:09,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:09,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:09,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:52:09,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:09,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:09,566 WARN L202 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2021-02-24 04:52:09,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:52:09,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:52:09,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:09,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:09,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:52:09,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409179603] [2021-02-24 04:52:09,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:52:09,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:52:09,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983405412] [2021-02-24 04:52:09,992 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:52:09,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:52:09,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:52:09,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:52:09,994 INFO L87 Difference]: Start difference. First operand 1916 states and 2337 transitions. Second operand 4 states. [2021-02-24 04:52:13,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:52:13,929 INFO L93 Difference]: Finished difference Result 3846 states and 4840 transitions. [2021-02-24 04:52:13,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:52:13,930 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 431 [2021-02-24 04:52:13,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:52:13,953 INFO L225 Difference]: With dead ends: 3846 [2021-02-24 04:52:13,953 INFO L226 Difference]: Without dead ends: 3158 [2021-02-24 04:52:13,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:52:13,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3158 states. [2021-02-24 04:52:14,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3158 to 3136. [2021-02-24 04:52:14,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3136 states. [2021-02-24 04:52:14,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3136 states to 3136 states and 3901 transitions. [2021-02-24 04:52:14,132 INFO L78 Accepts]: Start accepts. Automaton has 3136 states and 3901 transitions. Word has length 431 [2021-02-24 04:52:14,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:52:14,133 INFO L480 AbstractCegarLoop]: Abstraction has 3136 states and 3901 transitions. [2021-02-24 04:52:14,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:52:14,134 INFO L276 IsEmpty]: Start isEmpty. Operand 3136 states and 3901 transitions. [2021-02-24 04:52:14,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2021-02-24 04:52:14,144 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:52:14,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:52:14,147 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 04:52:14,147 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:52:14,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:52:14,149 INFO L82 PathProgramCache]: Analyzing trace with hash -820621855, now seen corresponding path program 1 times [2021-02-24 04:52:14,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:52:14,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480649832] [2021-02-24 04:52:14,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:52:14,156 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:52:14,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:52:14,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:14,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:14,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:14,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:52:14,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:14,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 04:52:14,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:14,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:14,975 WARN L202 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2021-02-24 04:52:14,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:52:14,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:52:15,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:15,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:15,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:52:15,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480649832] [2021-02-24 04:52:15,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:52:15,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 04:52:15,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817984951] [2021-02-24 04:52:15,297 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 04:52:15,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:52:15,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 04:52:15,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-24 04:52:15,299 INFO L87 Difference]: Start difference. First operand 3136 states and 3901 transitions. Second operand 5 states. [2021-02-24 04:52:22,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:52:22,082 INFO L93 Difference]: Finished difference Result 8853 states and 11082 transitions. [2021-02-24 04:52:22,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 04:52:22,084 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 431 [2021-02-24 04:52:22,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:52:22,129 INFO L225 Difference]: With dead ends: 8853 [2021-02-24 04:52:22,129 INFO L226 Difference]: Without dead ends: 5908 [2021-02-24 04:52:22,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:52:22,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5908 states. [2021-02-24 04:52:22,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5908 to 5764. [2021-02-24 04:52:22,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5764 states. [2021-02-24 04:52:22,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5764 states to 5764 states and 7193 transitions. [2021-02-24 04:52:22,558 INFO L78 Accepts]: Start accepts. Automaton has 5764 states and 7193 transitions. Word has length 431 [2021-02-24 04:52:22,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:52:22,559 INFO L480 AbstractCegarLoop]: Abstraction has 5764 states and 7193 transitions. [2021-02-24 04:52:22,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 04:52:22,560 INFO L276 IsEmpty]: Start isEmpty. Operand 5764 states and 7193 transitions. [2021-02-24 04:52:22,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2021-02-24 04:52:22,573 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:52:22,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:52:22,574 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 04:52:22,575 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:52:22,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:52:22,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1775729205, now seen corresponding path program 1 times [2021-02-24 04:52:22,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:52:22,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274230581] [2021-02-24 04:52:22,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:52:22,592 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:52:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:52:22,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:22,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:22,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:22,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:52:22,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:22,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:23,187 WARN L202 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2021-02-24 04:52:23,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:52:23,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:52:23,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:23,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:23,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:52:23,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274230581] [2021-02-24 04:52:23,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:52:23,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:52:23,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219539571] [2021-02-24 04:52:23,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:52:23,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:52:23,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:52:23,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:52:23,532 INFO L87 Difference]: Start difference. First operand 5764 states and 7193 transitions. Second operand 4 states. [2021-02-24 04:52:30,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:52:30,684 INFO L93 Difference]: Finished difference Result 16873 states and 21136 transitions. [2021-02-24 04:52:30,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:52:30,684 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 432 [2021-02-24 04:52:30,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:52:30,743 INFO L225 Difference]: With dead ends: 16873 [2021-02-24 04:52:30,743 INFO L226 Difference]: Without dead ends: 11334 [2021-02-24 04:52:30,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:52:30,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11334 states. [2021-02-24 04:52:31,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11334 to 5766. [2021-02-24 04:52:31,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5766 states. [2021-02-24 04:52:31,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5766 states to 5766 states and 7195 transitions. [2021-02-24 04:52:31,409 INFO L78 Accepts]: Start accepts. Automaton has 5766 states and 7195 transitions. Word has length 432 [2021-02-24 04:52:31,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:52:31,409 INFO L480 AbstractCegarLoop]: Abstraction has 5766 states and 7195 transitions. [2021-02-24 04:52:31,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:52:31,410 INFO L276 IsEmpty]: Start isEmpty. Operand 5766 states and 7195 transitions. [2021-02-24 04:52:31,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-02-24 04:52:31,425 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:52:31,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:52:31,426 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 04:52:31,426 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:52:31,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:52:31,427 INFO L82 PathProgramCache]: Analyzing trace with hash -890102780, now seen corresponding path program 1 times [2021-02-24 04:52:31,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:52:31,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037975057] [2021-02-24 04:52:31,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:52:31,432 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:52:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:52:31,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:31,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:31,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:31,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:52:31,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:31,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:32,024 WARN L202 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2021-02-24 04:52:32,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:52:32,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:52:32,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:32,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:32,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:52:32,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037975057] [2021-02-24 04:52:32,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:52:32,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:52:32,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861359714] [2021-02-24 04:52:32,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:52:32,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:52:32,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:52:32,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:52:32,363 INFO L87 Difference]: Start difference. First operand 5766 states and 7195 transitions. Second operand 4 states. [2021-02-24 04:52:38,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:52:38,741 INFO L93 Difference]: Finished difference Result 15146 states and 18944 transitions. [2021-02-24 04:52:38,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:52:38,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 433 [2021-02-24 04:52:38,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:52:38,794 INFO L225 Difference]: With dead ends: 15146 [2021-02-24 04:52:38,795 INFO L226 Difference]: Without dead ends: 9814 [2021-02-24 04:52:38,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:52:38,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9814 states. [2021-02-24 04:52:39,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9814 to 9670. [2021-02-24 04:52:39,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9670 states. [2021-02-24 04:52:39,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9670 states to 9670 states and 12026 transitions. [2021-02-24 04:52:39,856 INFO L78 Accepts]: Start accepts. Automaton has 9670 states and 12026 transitions. Word has length 433 [2021-02-24 04:52:39,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:52:39,857 INFO L480 AbstractCegarLoop]: Abstraction has 9670 states and 12026 transitions. [2021-02-24 04:52:39,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:52:39,857 INFO L276 IsEmpty]: Start isEmpty. Operand 9670 states and 12026 transitions. [2021-02-24 04:52:39,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-02-24 04:52:39,879 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:52:39,880 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:52:39,880 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 04:52:39,880 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:52:39,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:52:39,881 INFO L82 PathProgramCache]: Analyzing trace with hash 519462020, now seen corresponding path program 1 times [2021-02-24 04:52:39,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:52:39,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774680257] [2021-02-24 04:52:39,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:52:39,886 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:52:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:52:40,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:40,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:40,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:40,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:52:40,180 WARN L141 QuantifierPusher]: treesize reduction 6, result has 87.0 percent of original size [2021-02-24 04:52:40,181 WARN L147 QuantifierPusher]: treesize reduction 6, result has 87.0 percent of original size 40 [2021-02-24 04:52:40,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:40,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 04:52:40,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:40,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:40,595 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2021-02-24 04:52:40,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:52:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:52:40,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:40,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:40,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:52:40,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774680257] [2021-02-24 04:52:40,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:52:40,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 04:52:40,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629188414] [2021-02-24 04:52:40,884 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 04:52:40,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:52:40,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 04:52:40,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:52:40,886 INFO L87 Difference]: Start difference. First operand 9670 states and 12026 transitions. Second operand 6 states. [2021-02-24 04:52:47,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:52:47,884 INFO L93 Difference]: Finished difference Result 27709 states and 34490 transitions. [2021-02-24 04:52:47,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 04:52:47,885 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 433 [2021-02-24 04:52:47,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:52:47,935 INFO L225 Difference]: With dead ends: 27709 [2021-02-24 04:52:47,935 INFO L226 Difference]: Without dead ends: 18235 [2021-02-24 04:52:47,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:52:47,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18235 states. [2021-02-24 04:52:49,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18235 to 18112. [2021-02-24 04:52:49,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18112 states. [2021-02-24 04:52:49,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18112 states to 18112 states and 22414 transitions. [2021-02-24 04:52:49,715 INFO L78 Accepts]: Start accepts. Automaton has 18112 states and 22414 transitions. Word has length 433 [2021-02-24 04:52:49,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:52:49,715 INFO L480 AbstractCegarLoop]: Abstraction has 18112 states and 22414 transitions. [2021-02-24 04:52:49,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 04:52:49,715 INFO L276 IsEmpty]: Start isEmpty. Operand 18112 states and 22414 transitions. [2021-02-24 04:52:49,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-02-24 04:52:49,742 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:52:49,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:52:49,743 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-24 04:52:49,744 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:52:49,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:52:49,744 INFO L82 PathProgramCache]: Analyzing trace with hash 602210547, now seen corresponding path program 1 times [2021-02-24 04:52:49,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:52:49,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593677107] [2021-02-24 04:52:49,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:52:49,749 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:52:49,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:52:49,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:49,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:49,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:49,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:52:49,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:49,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 04:52:49,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:49,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:50,378 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2021-02-24 04:52:50,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:52:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:52:50,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:50,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:50,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:52:50,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593677107] [2021-02-24 04:52:50,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:52:50,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 04:52:50,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886023889] [2021-02-24 04:52:50,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 04:52:50,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:52:50,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 04:52:50,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-24 04:52:50,740 INFO L87 Difference]: Start difference. First operand 18112 states and 22414 transitions. Second operand 5 states. [2021-02-24 04:52:59,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:52:59,502 INFO L93 Difference]: Finished difference Result 52635 states and 65113 transitions. [2021-02-24 04:52:59,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 04:52:59,502 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 433 [2021-02-24 04:52:59,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:52:59,590 INFO L225 Difference]: With dead ends: 52635 [2021-02-24 04:52:59,590 INFO L226 Difference]: Without dead ends: 34794 [2021-02-24 04:52:59,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:52:59,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34794 states. [2021-02-24 04:53:03,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34794 to 34636. [2021-02-24 04:53:03,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34636 states. [2021-02-24 04:53:03,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34636 states to 34636 states and 42593 transitions. [2021-02-24 04:53:03,097 INFO L78 Accepts]: Start accepts. Automaton has 34636 states and 42593 transitions. Word has length 433 [2021-02-24 04:53:03,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:53:03,097 INFO L480 AbstractCegarLoop]: Abstraction has 34636 states and 42593 transitions. [2021-02-24 04:53:03,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 04:53:03,098 INFO L276 IsEmpty]: Start isEmpty. Operand 34636 states and 42593 transitions. [2021-02-24 04:53:03,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2021-02-24 04:53:03,148 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:53:03,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:53:03,150 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-24 04:53:03,150 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:53:03,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:53:03,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1671182647, now seen corresponding path program 1 times [2021-02-24 04:53:03,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:53:03,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052715825] [2021-02-24 04:53:03,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:53:03,157 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:53:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:53:03,299 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:53:03,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:53:03,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:53:03,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:53:03,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:53:03,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:53:03,691 WARN L202 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2021-02-24 04:53:03,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:53:03,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:53:03,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:53:03,716 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:53:04,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:53:04,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052715825] [2021-02-24 04:53:04,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:53:04,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:53:04,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822884466] [2021-02-24 04:53:04,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:53:04,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:53:04,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:53:04,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:53:04,019 INFO L87 Difference]: Start difference. First operand 34636 states and 42593 transitions. Second operand 4 states. [2021-02-24 04:53:16,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:53:16,634 INFO L93 Difference]: Finished difference Result 103301 states and 127091 transitions. [2021-02-24 04:53:16,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:53:16,636 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 434 [2021-02-24 04:53:16,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:53:16,796 INFO L225 Difference]: With dead ends: 103301 [2021-02-24 04:53:16,797 INFO L226 Difference]: Without dead ends: 68986 [2021-02-24 04:53:16,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:53:16,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68986 states. [2021-02-24 04:53:21,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68986 to 34646. [2021-02-24 04:53:21,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34646 states. [2021-02-24 04:53:21,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34646 states to 34646 states and 42603 transitions. [2021-02-24 04:53:21,253 INFO L78 Accepts]: Start accepts. Automaton has 34646 states and 42603 transitions. Word has length 434 [2021-02-24 04:53:21,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:53:21,253 INFO L480 AbstractCegarLoop]: Abstraction has 34646 states and 42603 transitions. [2021-02-24 04:53:21,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:53:21,254 INFO L276 IsEmpty]: Start isEmpty. Operand 34646 states and 42603 transitions. [2021-02-24 04:53:21,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2021-02-24 04:53:21,301 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:53:21,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:53:21,302 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-24 04:53:21,302 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:53:21,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:53:21,303 INFO L82 PathProgramCache]: Analyzing trace with hash 115756502, now seen corresponding path program 1 times [2021-02-24 04:53:21,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:53:21,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64445543] [2021-02-24 04:53:21,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:53:21,308 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:53:21,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:53:21,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:53:21,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:53:21,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:53:21,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:53:21,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:53:21,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:53:21,942 WARN L202 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2021-02-24 04:53:21,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:53:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:53:21,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:53:21,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:53:22,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:53:22,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64445543] [2021-02-24 04:53:22,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:53:22,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:53:22,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774661439] [2021-02-24 04:53:22,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:53:22,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:53:22,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:53:22,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:53:22,256 INFO L87 Difference]: Start difference. First operand 34646 states and 42603 transitions. Second operand 4 states. [2021-02-24 04:53:33,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:53:33,509 INFO L93 Difference]: Finished difference Result 92028 states and 112996 transitions. [2021-02-24 04:53:33,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:53:33,509 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 435 [2021-02-24 04:53:33,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:53:33,654 INFO L225 Difference]: With dead ends: 92028 [2021-02-24 04:53:33,655 INFO L226 Difference]: Without dead ends: 58730 [2021-02-24 04:53:33,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:53:33,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58730 states. [2021-02-24 04:53:40,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58730 to 58572. [2021-02-24 04:53:40,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58572 states. [2021-02-24 04:53:40,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58572 states to 58572 states and 71312 transitions. [2021-02-24 04:53:40,278 INFO L78 Accepts]: Start accepts. Automaton has 58572 states and 71312 transitions. Word has length 435 [2021-02-24 04:53:40,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:53:40,279 INFO L480 AbstractCegarLoop]: Abstraction has 58572 states and 71312 transitions. [2021-02-24 04:53:40,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:53:40,279 INFO L276 IsEmpty]: Start isEmpty. Operand 58572 states and 71312 transitions. [2021-02-24 04:53:40,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2021-02-24 04:53:40,335 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:53:40,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:53:40,336 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-24 04:53:40,336 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:53:40,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:53:40,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1052447146, now seen corresponding path program 1 times [2021-02-24 04:53:40,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:53:40,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203904503] [2021-02-24 04:53:40,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:53:40,342 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:53:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:53:40,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:53:40,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:53:40,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:53:40,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:53:40,533 WARN L141 QuantifierPusher]: treesize reduction 6, result has 87.0 percent of original size [2021-02-24 04:53:40,535 WARN L147 QuantifierPusher]: treesize reduction 6, result has 87.0 percent of original size 40 [2021-02-24 04:53:40,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:53:40,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 04:53:40,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:53:40,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:53:40,978 WARN L202 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2021-02-24 04:53:40,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:53:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:53:41,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:53:41,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:53:41,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:53:41,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203904503] [2021-02-24 04:53:41,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:53:41,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 04:53:41,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099367213] [2021-02-24 04:53:41,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 04:53:41,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:53:41,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 04:53:41,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:53:41,444 INFO L87 Difference]: Start difference. First operand 58572 states and 71312 transitions. Second operand 6 states. [2021-02-24 04:53:57,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:53:57,815 INFO L93 Difference]: Finished difference Result 156608 states and 190208 transitions. [2021-02-24 04:53:57,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 04:53:57,816 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 435 [2021-02-24 04:53:57,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:53:58,077 INFO L225 Difference]: With dead ends: 156608 [2021-02-24 04:53:58,077 INFO L226 Difference]: Without dead ends: 98333 [2021-02-24 04:53:58,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:53:58,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98333 states. [2021-02-24 04:54:09,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98333 to 98219. [2021-02-24 04:54:09,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98219 states. [2021-02-24 04:54:10,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98219 states to 98219 states and 118222 transitions. [2021-02-24 04:54:10,300 INFO L78 Accepts]: Start accepts. Automaton has 98219 states and 118222 transitions. Word has length 435 [2021-02-24 04:54:10,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:54:10,301 INFO L480 AbstractCegarLoop]: Abstraction has 98219 states and 118222 transitions. [2021-02-24 04:54:10,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 04:54:10,301 INFO L276 IsEmpty]: Start isEmpty. Operand 98219 states and 118222 transitions. [2021-02-24 04:54:10,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2021-02-24 04:54:10,424 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:54:10,424 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:54:10,425 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-24 04:54:10,425 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:54:10,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:54:10,426 INFO L82 PathProgramCache]: Analyzing trace with hash 964094813, now seen corresponding path program 1 times [2021-02-24 04:54:10,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:54:10,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138236238] [2021-02-24 04:54:10,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:54:10,432 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:54:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:54:10,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:54:10,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:54:10,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:54:10,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:54:10,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:54:10,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 04:54:10,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:54:10,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:54:11,101 WARN L202 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2021-02-24 04:54:11,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:54:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:54:11,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:54:11,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:54:11,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:54:11,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138236238] [2021-02-24 04:54:11,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:54:11,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 04:54:11,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231359804] [2021-02-24 04:54:11,850 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 04:54:11,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:54:11,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 04:54:11,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-24 04:54:11,856 INFO L87 Difference]: Start difference. First operand 98219 states and 118222 transitions. Second operand 5 states. [2021-02-24 04:54:30,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:54:30,042 INFO L93 Difference]: Finished difference Result 196944 states and 236986 transitions. [2021-02-24 04:54:30,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 04:54:30,042 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 435 [2021-02-24 04:54:30,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:54:30,422 INFO L225 Difference]: With dead ends: 196944 [2021-02-24 04:54:30,422 INFO L226 Difference]: Without dead ends: 99503 [2021-02-24 04:54:30,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:54:30,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99503 states. [2021-02-24 04:54:42,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99503 to 98781. [2021-02-24 04:54:42,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98781 states. [2021-02-24 04:54:42,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98781 states to 98781 states and 118831 transitions. [2021-02-24 04:54:42,581 INFO L78 Accepts]: Start accepts. Automaton has 98781 states and 118831 transitions. Word has length 435 [2021-02-24 04:54:42,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:54:42,581 INFO L480 AbstractCegarLoop]: Abstraction has 98781 states and 118831 transitions. [2021-02-24 04:54:42,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 04:54:42,581 INFO L276 IsEmpty]: Start isEmpty. Operand 98781 states and 118831 transitions. [2021-02-24 04:54:42,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2021-02-24 04:54:42,679 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:54:42,680 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:54:42,680 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-24 04:54:42,680 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:54:42,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:54:42,681 INFO L82 PathProgramCache]: Analyzing trace with hash -212309535, now seen corresponding path program 1 times [2021-02-24 04:54:42,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:54:42,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237778812] [2021-02-24 04:54:42,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:54:42,685 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:54:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:54:42,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:54:42,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:54:42,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:54:42,799 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:54:42,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:54:42,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:54:43,214 WARN L202 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2021-02-24 04:54:43,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:54:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:54:43,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:54:43,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:54:43,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:54:43,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237778812] [2021-02-24 04:54:43,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:54:43,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:54:43,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942525575] [2021-02-24 04:54:43,658 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:54:43,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:54:43,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:54:43,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:54:43,660 INFO L87 Difference]: Start difference. First operand 98781 states and 118831 transitions. Second operand 4 states.