/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_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 00:34:33,173 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2021-02-24 00:34:33,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 00:34:33,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 00:34:33,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 00:34:33,291 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-24 00:34:33,305 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:34:33,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:34:33,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:34:33,308 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:34:33,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:34:33,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:34:33,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:34:33,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:34:33,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:34:33,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:34:33,310 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:34:33,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:34:33,311 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:34:33,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:34:33,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:34:33,312 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:34:33,312 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:34:33,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:34:33,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:34:33,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:34:33,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:34:33,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:34:33,314 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:34:33,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:34:33,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:34:33,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:34:33,799 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:34:33,800 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:34:33,801 INFO L432 ainManager$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 00:34:33,891 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24370c55b/6ba83697a20249d28ca32094dac1d152/FLAG995ecfa96 [2021-02-24 00:34:34,709 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:34:34,710 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 00:34:34,727 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24370c55b/6ba83697a20249d28ca32094dac1d152/FLAG995ecfa96 [2021-02-24 00:34:34,925 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24370c55b/6ba83697a20249d28ca32094dac1d152 [2021-02-24 00:34:34,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:34:34,947 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:34:34,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:34:34,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:34:34,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:34:34,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:34:34" (1/1) ... [2021-02-24 00:34:34,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@398b2e8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:34:34, skipping insertion in model container [2021-02-24 00:34:34,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:34:34" (1/1) ... [2021-02-24 00:34:34,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:34:35,029 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:34:35,431 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 00:34:35,446 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 00:34:35,466 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 00:34:35,483 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 00:34:35,616 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 00:34:35,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:34:35,804 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:34:35,902 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 00:34:35,912 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 00:34:35,926 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 00:34:35,939 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 00:34:36,007 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 00:34:36,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:34:36,080 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:34:36,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:34:36 WrapperNode [2021-02-24 00:34:36,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:34:36,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:34:36,082 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:34:36,082 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:34:36,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:34:36" (1/1) ... [2021-02-24 00:34:36,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:34:36" (1/1) ... [2021-02-24 00:34:36,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:34:36" (1/1) ... [2021-02-24 00:34:36,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:34:36" (1/1) ... [2021-02-24 00:34:36,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:34:36" (1/1) ... [2021-02-24 00:34:36,182 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:34:36" (1/1) ... [2021-02-24 00:34:36,191 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:34:36" (1/1) ... [2021-02-24 00:34:36,207 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:34:36,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:34:36,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:34:36,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:34:36,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:34:36" (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 00:34:36,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:34:36,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:34:36,343 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:34:36,344 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 00:34:36,344 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:34:36,345 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:34:36,345 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:34:36,345 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:34:36,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:34:36,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-02-24 00:34:36,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-02-24 00:34:36,347 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-02-24 00:34:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 00:34:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure read [2021-02-24 00:34:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure write [2021-02-24 00:34:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2021-02-24 00:34:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2021-02-24 00:34:36,349 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2021-02-24 00:34:36,349 INFO L130 BoogieDeclarations]: Found specification of procedure init [2021-02-24 00:34:36,349 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-02-24 00:34:36,349 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:34:36,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:34:36,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:34:36,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:34:36,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:34:36,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:34:36,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:34:38,294 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:34:38,294 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-24 00:34:38,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:34:38 BoogieIcfgContainer [2021-02-24 00:34:38,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:34:38,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:34:38,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:34:38,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:34:38,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:34:34" (1/3) ... [2021-02-24 00:34:38,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55faf36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:34:38, skipping insertion in model container [2021-02-24 00:34:38,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:34:36" (2/3) ... [2021-02-24 00:34:38,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55faf36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:34:38, skipping insertion in model container [2021-02-24 00:34:38,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:34:38" (3/3) ... [2021-02-24 00:34:38,310 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-02-24 00:34:38,318 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:34:38,325 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2021-02-24 00:34:38,345 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-02-24 00:34:38,377 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:34:38,378 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:34:38,378 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:34:38,378 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:34:38,378 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:34:38,378 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:34:38,378 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:34:38,379 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:34:38,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states. [2021-02-24 00:34:38,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2021-02-24 00:34:38,474 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:34:38,476 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 00:34:38,476 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:34:38,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:34:38,485 INFO L82 PathProgramCache]: Analyzing trace with hash -966048575, now seen corresponding path program 1 times [2021-02-24 00:34:38,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:34:38,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660508173] [2021-02-24 00:34:38,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:34:38,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:34:39,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:39,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:34:39,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:39,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:34:39,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:39,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:34:39,653 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2021-02-24 00:34:39,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:34:39,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:34:39,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:39,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:34:40,178 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 00:34:40,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660508173] [2021-02-24 00:34:40,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:34:40,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 00:34:40,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627787533] [2021-02-24 00:34:40,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 00:34:40,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:34:40,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 00:34:40,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 00:34:40,236 INFO L87 Difference]: Start difference. First operand 1135 states. Second operand 4 states. [2021-02-24 00:34:44,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:34:44,579 INFO L93 Difference]: Finished difference Result 1841 states and 2368 transitions. [2021-02-24 00:34:44,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 00:34:44,581 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 431 [2021-02-24 00:34:44,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:34:44,620 INFO L225 Difference]: With dead ends: 1841 [2021-02-24 00:34:44,621 INFO L226 Difference]: Without dead ends: 1311 [2021-02-24 00:34:44,630 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 00:34:44,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2021-02-24 00:34:44,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1304. [2021-02-24 00:34:44,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1304 states. [2021-02-24 00:34:44,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 1553 transitions. [2021-02-24 00:34:44,806 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 1553 transitions. Word has length 431 [2021-02-24 00:34:44,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:34:44,807 INFO L480 AbstractCegarLoop]: Abstraction has 1304 states and 1553 transitions. [2021-02-24 00:34:44,807 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 00:34:44,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 1553 transitions. [2021-02-24 00:34:44,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2021-02-24 00:34:44,816 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:34:44,817 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 00:34:44,818 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:34:44,818 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:34:44,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:34:44,821 INFO L82 PathProgramCache]: Analyzing trace with hash 276539329, now seen corresponding path program 1 times [2021-02-24 00:34:44,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:34:44,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116760573] [2021-02-24 00:34:44,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:34:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:34:45,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:45,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:34:45,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:45,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:34:45,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:45,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:34:45,518 WARN L202 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2021-02-24 00:34:45,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:34:45,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:34:45,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:45,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:34:45,807 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 00:34:45,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116760573] [2021-02-24 00:34:45,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:34:45,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 00:34:45,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981184733] [2021-02-24 00:34:45,810 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 00:34:45,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:34:45,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 00:34:45,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 00:34:45,812 INFO L87 Difference]: Start difference. First operand 1304 states and 1553 transitions. Second operand 4 states. [2021-02-24 00:34:49,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:34:49,477 INFO L93 Difference]: Finished difference Result 2368 states and 2917 transitions. [2021-02-24 00:34:49,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 00:34:49,478 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 431 [2021-02-24 00:34:49,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:34:49,489 INFO L225 Difference]: With dead ends: 2368 [2021-02-24 00:34:49,489 INFO L226 Difference]: Without dead ends: 1928 [2021-02-24 00:34:49,494 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 00:34:49,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1928 states. [2021-02-24 00:34:49,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1928 to 1916. [2021-02-24 00:34:49,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1916 states. [2021-02-24 00:34:49,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2337 transitions. [2021-02-24 00:34:49,625 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2337 transitions. Word has length 431 [2021-02-24 00:34:49,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:34:49,627 INFO L480 AbstractCegarLoop]: Abstraction has 1916 states and 2337 transitions. [2021-02-24 00:34:49,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 00:34:49,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2337 transitions. [2021-02-24 00:34:49,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2021-02-24 00:34:49,639 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:34:49,639 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 00:34:49,640 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:34:49,642 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:34:49,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:34:49,643 INFO L82 PathProgramCache]: Analyzing trace with hash -525678495, now seen corresponding path program 1 times [2021-02-24 00:34:49,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:34:49,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254567026] [2021-02-24 00:34:49,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:34:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:34:49,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:49,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:34:49,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:49,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:34:49,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:49,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:34:50,133 WARN L202 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2021-02-24 00:34:50,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:34:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:34:50,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:50,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:34:50,411 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 00:34:50,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254567026] [2021-02-24 00:34:50,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:34:50,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 00:34:50,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001759531] [2021-02-24 00:34:50,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 00:34:50,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:34:50,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 00:34:50,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 00:34:50,415 INFO L87 Difference]: Start difference. First operand 1916 states and 2337 transitions. Second operand 4 states. [2021-02-24 00:34:53,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:34:53,715 INFO L93 Difference]: Finished difference Result 3846 states and 4840 transitions. [2021-02-24 00:34:53,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 00:34:53,716 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 431 [2021-02-24 00:34:53,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:34:53,735 INFO L225 Difference]: With dead ends: 3846 [2021-02-24 00:34:53,736 INFO L226 Difference]: Without dead ends: 3158 [2021-02-24 00:34:53,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 00:34:53,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3158 states. [2021-02-24 00:34:53,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3158 to 3136. [2021-02-24 00:34:53,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3136 states. [2021-02-24 00:34:53,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3136 states to 3136 states and 3901 transitions. [2021-02-24 00:34:53,935 INFO L78 Accepts]: Start accepts. Automaton has 3136 states and 3901 transitions. Word has length 431 [2021-02-24 00:34:53,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:34:53,936 INFO L480 AbstractCegarLoop]: Abstraction has 3136 states and 3901 transitions. [2021-02-24 00:34:53,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 00:34:53,937 INFO L276 IsEmpty]: Start isEmpty. Operand 3136 states and 3901 transitions. [2021-02-24 00:34:53,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2021-02-24 00:34:53,949 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:34:53,949 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:34:53,949 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:34:53,950 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:34:53,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:34:53,950 INFO L82 PathProgramCache]: Analyzing trace with hash -820621855, now seen corresponding path program 1 times [2021-02-24 00:34:53,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:34:53,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326670185] [2021-02-24 00:34:53,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:34:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:34:54,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:54,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:34:54,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:54,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:34:54,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:54,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:34:54,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:54,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:34:54,681 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2021-02-24 00:34:54,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:34:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:34:54,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:34:54,716 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:34:55,023 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 00:34:55,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326670185] [2021-02-24 00:34:55,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:34:55,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 00:34:55,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631690516] [2021-02-24 00:34:55,026 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:34:55,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:34:55,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:34:55,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:34:55,028 INFO L87 Difference]: Start difference. First operand 3136 states and 3901 transitions. Second operand 5 states. [2021-02-24 00:35:01,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:35:01,045 INFO L93 Difference]: Finished difference Result 8853 states and 11082 transitions. [2021-02-24 00:35:01,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 00:35:01,045 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 431 [2021-02-24 00:35:01,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:35:01,080 INFO L225 Difference]: With dead ends: 8853 [2021-02-24 00:35:01,082 INFO L226 Difference]: Without dead ends: 5908 [2021-02-24 00:35:01,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-24 00:35:01,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5908 states. [2021-02-24 00:35:01,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5908 to 5764. [2021-02-24 00:35:01,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5764 states. [2021-02-24 00:35:01,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5764 states to 5764 states and 7193 transitions. [2021-02-24 00:35:01,512 INFO L78 Accepts]: Start accepts. Automaton has 5764 states and 7193 transitions. Word has length 431 [2021-02-24 00:35:01,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:35:01,513 INFO L480 AbstractCegarLoop]: Abstraction has 5764 states and 7193 transitions. [2021-02-24 00:35:01,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:35:01,513 INFO L276 IsEmpty]: Start isEmpty. Operand 5764 states and 7193 transitions. [2021-02-24 00:35:01,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2021-02-24 00:35:01,530 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:35:01,531 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 00:35:01,531 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 00:35:01,531 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:35:01,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:35:01,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1775729205, now seen corresponding path program 1 times [2021-02-24 00:35:01,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:35:01,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41704093] [2021-02-24 00:35:01,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:35:01,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:35:01,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:01,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:35:01,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:01,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:35:01,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:01,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:35:01,947 WARN L202 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2021-02-24 00:35:01,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:35:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:35:01,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:01,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:35:02,235 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 00:35:02,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41704093] [2021-02-24 00:35:02,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:35:02,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 00:35:02,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167580020] [2021-02-24 00:35:02,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 00:35:02,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:35:02,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 00:35:02,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 00:35:02,244 INFO L87 Difference]: Start difference. First operand 5764 states and 7193 transitions. Second operand 4 states. [2021-02-24 00:35:08,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:35:08,005 INFO L93 Difference]: Finished difference Result 16873 states and 21136 transitions. [2021-02-24 00:35:08,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 00:35:08,006 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 432 [2021-02-24 00:35:08,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:35:08,060 INFO L225 Difference]: With dead ends: 16873 [2021-02-24 00:35:08,060 INFO L226 Difference]: Without dead ends: 11334 [2021-02-24 00:35:08,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 00:35:08,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11334 states. [2021-02-24 00:35:08,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11334 to 5766. [2021-02-24 00:35:08,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5766 states. [2021-02-24 00:35:08,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5766 states to 5766 states and 7195 transitions. [2021-02-24 00:35:08,660 INFO L78 Accepts]: Start accepts. Automaton has 5766 states and 7195 transitions. Word has length 432 [2021-02-24 00:35:08,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:35:08,661 INFO L480 AbstractCegarLoop]: Abstraction has 5766 states and 7195 transitions. [2021-02-24 00:35:08,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 00:35:08,661 INFO L276 IsEmpty]: Start isEmpty. Operand 5766 states and 7195 transitions. [2021-02-24 00:35:08,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-02-24 00:35:08,679 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:35:08,680 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] [2021-02-24 00:35:08,680 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 00:35:08,681 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:35:08,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:35:08,681 INFO L82 PathProgramCache]: Analyzing trace with hash -890102780, now seen corresponding path program 1 times [2021-02-24 00:35:08,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:35:08,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951711580] [2021-02-24 00:35:08,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:35:08,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:35:08,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:08,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:35:08,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:08,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:35:08,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:08,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:35:09,122 WARN L202 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2021-02-24 00:35:09,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:35:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:35:09,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:09,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:35:09,452 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 00:35:09,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951711580] [2021-02-24 00:35:09,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:35:09,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 00:35:09,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589878452] [2021-02-24 00:35:09,460 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 00:35:09,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:35:09,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 00:35:09,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 00:35:09,461 INFO L87 Difference]: Start difference. First operand 5766 states and 7195 transitions. Second operand 4 states. [2021-02-24 00:35:14,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:35:14,886 INFO L93 Difference]: Finished difference Result 15146 states and 18944 transitions. [2021-02-24 00:35:14,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 00:35:14,887 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 433 [2021-02-24 00:35:14,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:35:14,930 INFO L225 Difference]: With dead ends: 15146 [2021-02-24 00:35:14,930 INFO L226 Difference]: Without dead ends: 9814 [2021-02-24 00:35:14,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 00:35:14,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9814 states. [2021-02-24 00:35:15,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9814 to 9670. [2021-02-24 00:35:15,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9670 states. [2021-02-24 00:35:15,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9670 states to 9670 states and 12026 transitions. [2021-02-24 00:35:15,721 INFO L78 Accepts]: Start accepts. Automaton has 9670 states and 12026 transitions. Word has length 433 [2021-02-24 00:35:15,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:35:15,721 INFO L480 AbstractCegarLoop]: Abstraction has 9670 states and 12026 transitions. [2021-02-24 00:35:15,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 00:35:15,722 INFO L276 IsEmpty]: Start isEmpty. Operand 9670 states and 12026 transitions. [2021-02-24 00:35:15,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-02-24 00:35:15,748 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:35:15,748 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 00:35:15,749 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 00:35:15,749 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:35:15,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:35:15,750 INFO L82 PathProgramCache]: Analyzing trace with hash 519462020, now seen corresponding path program 1 times [2021-02-24 00:35:15,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:35:15,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431613936] [2021-02-24 00:35:15,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:35:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:35:15,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:15,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:35:15,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:15,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:35:15,949 WARN L141 QuantifierPusher]: treesize reduction 6, result has 87.0 percent of original size [2021-02-24 00:35:15,952 WARN L147 QuantifierPusher]: treesize reduction 6, result has 87.0 percent of original size 40 [2021-02-24 00:35:15,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:15,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:35:15,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:15,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:35:16,291 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2021-02-24 00:35:16,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:35:16,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:35:16,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:16,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:35:16,621 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 00:35:16,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431613936] [2021-02-24 00:35:16,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:35:16,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 00:35:16,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171111268] [2021-02-24 00:35:16,623 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 00:35:16,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:35:16,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 00:35:16,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-24 00:35:16,624 INFO L87 Difference]: Start difference. First operand 9670 states and 12026 transitions. Second operand 6 states. [2021-02-24 00:35:23,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:35:23,507 INFO L93 Difference]: Finished difference Result 27709 states and 34490 transitions. [2021-02-24 00:35:23,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 00:35:23,508 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 433 [2021-02-24 00:35:23,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:35:23,552 INFO L225 Difference]: With dead ends: 27709 [2021-02-24 00:35:23,553 INFO L226 Difference]: Without dead ends: 18235 [2021-02-24 00:35:23,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-24 00:35:23,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18235 states. [2021-02-24 00:35:24,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18235 to 18112. [2021-02-24 00:35:24,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18112 states. [2021-02-24 00:35:24,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18112 states to 18112 states and 22414 transitions. [2021-02-24 00:35:24,992 INFO L78 Accepts]: Start accepts. Automaton has 18112 states and 22414 transitions. Word has length 433 [2021-02-24 00:35:24,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:35:24,993 INFO L480 AbstractCegarLoop]: Abstraction has 18112 states and 22414 transitions. [2021-02-24 00:35:24,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 00:35:24,993 INFO L276 IsEmpty]: Start isEmpty. Operand 18112 states and 22414 transitions. [2021-02-24 00:35:25,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-02-24 00:35:25,025 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:35:25,025 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 00:35:25,026 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-24 00:35:25,026 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:35:25,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:35:25,027 INFO L82 PathProgramCache]: Analyzing trace with hash 602210547, now seen corresponding path program 1 times [2021-02-24 00:35:25,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:35:25,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492161210] [2021-02-24 00:35:25,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:35:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:35:25,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:25,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:35:25,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:25,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:35:25,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:25,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:35:25,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:25,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:35:25,526 WARN L202 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2021-02-24 00:35:25,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:35:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:35:25,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:25,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:35:25,785 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 00:35:25,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492161210] [2021-02-24 00:35:25,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:35:25,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 00:35:25,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700498564] [2021-02-24 00:35:25,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:35:25,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:35:25,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:35:25,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:35:25,788 INFO L87 Difference]: Start difference. First operand 18112 states and 22414 transitions. Second operand 5 states. [2021-02-24 00:35:33,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:35:33,961 INFO L93 Difference]: Finished difference Result 52635 states and 65113 transitions. [2021-02-24 00:35:33,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 00:35:33,963 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 433 [2021-02-24 00:35:33,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:35:34,046 INFO L225 Difference]: With dead ends: 52635 [2021-02-24 00:35:34,046 INFO L226 Difference]: Without dead ends: 34794 [2021-02-24 00:35:34,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-24 00:35:34,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34794 states. [2021-02-24 00:35:36,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34794 to 34636. [2021-02-24 00:35:36,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34636 states. [2021-02-24 00:35:36,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34636 states to 34636 states and 42593 transitions. [2021-02-24 00:35:36,914 INFO L78 Accepts]: Start accepts. Automaton has 34636 states and 42593 transitions. Word has length 433 [2021-02-24 00:35:36,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:35:36,915 INFO L480 AbstractCegarLoop]: Abstraction has 34636 states and 42593 transitions. [2021-02-24 00:35:36,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:35:36,915 INFO L276 IsEmpty]: Start isEmpty. Operand 34636 states and 42593 transitions. [2021-02-24 00:35:36,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2021-02-24 00:35:36,966 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:35:36,966 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 00:35:36,966 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-24 00:35:36,966 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:35:36,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:35:36,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1671182647, now seen corresponding path program 1 times [2021-02-24 00:35:36,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:35:36,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161148770] [2021-02-24 00:35:36,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:35:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:35:37,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:37,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:35:37,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:37,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:35:37,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:37,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:35:37,386 WARN L202 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2021-02-24 00:35:37,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:35:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:35:37,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:37,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:35:37,563 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 00:35:37,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161148770] [2021-02-24 00:35:37,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:35:37,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 00:35:37,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318315465] [2021-02-24 00:35:37,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 00:35:37,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:35:37,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 00:35:37,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 00:35:37,566 INFO L87 Difference]: Start difference. First operand 34636 states and 42593 transitions. Second operand 4 states. [2021-02-24 00:35:49,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:35:49,264 INFO L93 Difference]: Finished difference Result 103301 states and 127091 transitions. [2021-02-24 00:35:49,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 00:35:49,265 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 434 [2021-02-24 00:35:49,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:35:49,401 INFO L225 Difference]: With dead ends: 103301 [2021-02-24 00:35:49,402 INFO L226 Difference]: Without dead ends: 68986 [2021-02-24 00:35:49,484 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 00:35:49,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68986 states. [2021-02-24 00:35:53,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68986 to 34646. [2021-02-24 00:35:53,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34646 states. [2021-02-24 00:35:53,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34646 states to 34646 states and 42603 transitions. [2021-02-24 00:35:53,521 INFO L78 Accepts]: Start accepts. Automaton has 34646 states and 42603 transitions. Word has length 434 [2021-02-24 00:35:53,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:35:53,521 INFO L480 AbstractCegarLoop]: Abstraction has 34646 states and 42603 transitions. [2021-02-24 00:35:53,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 00:35:53,521 INFO L276 IsEmpty]: Start isEmpty. Operand 34646 states and 42603 transitions. [2021-02-24 00:35:53,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2021-02-24 00:35:53,566 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:35:53,567 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 00:35:53,567 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-24 00:35:53,567 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:35:53,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:35:53,568 INFO L82 PathProgramCache]: Analyzing trace with hash 115756502, now seen corresponding path program 1 times [2021-02-24 00:35:53,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:35:53,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876769924] [2021-02-24 00:35:53,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:35:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:35:53,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:53,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:35:53,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:53,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:35:53,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:53,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:35:54,103 WARN L202 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2021-02-24 00:35:54,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:35:54,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:35:54,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:35:54,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:35:54,273 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 00:35:54,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876769924] [2021-02-24 00:35:54,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:35:54,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 00:35:54,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212121230] [2021-02-24 00:35:54,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 00:35:54,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:35:54,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 00:35:54,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 00:35:54,276 INFO L87 Difference]: Start difference. First operand 34646 states and 42603 transitions. Second operand 4 states. [2021-02-24 00:36:04,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:36:04,885 INFO L93 Difference]: Finished difference Result 92028 states and 112996 transitions. [2021-02-24 00:36:04,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 00:36:04,886 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 435 [2021-02-24 00:36:04,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:36:04,994 INFO L225 Difference]: With dead ends: 92028 [2021-02-24 00:36:04,994 INFO L226 Difference]: Without dead ends: 58730 [2021-02-24 00:36:05,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 00:36:05,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58730 states. [2021-02-24 00:36:11,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58730 to 58572. [2021-02-24 00:36:11,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58572 states. [2021-02-24 00:36:11,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58572 states to 58572 states and 71312 transitions. [2021-02-24 00:36:11,563 INFO L78 Accepts]: Start accepts. Automaton has 58572 states and 71312 transitions. Word has length 435 [2021-02-24 00:36:11,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:36:11,564 INFO L480 AbstractCegarLoop]: Abstraction has 58572 states and 71312 transitions. [2021-02-24 00:36:11,564 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 00:36:11,564 INFO L276 IsEmpty]: Start isEmpty. Operand 58572 states and 71312 transitions. [2021-02-24 00:36:11,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2021-02-24 00:36:11,606 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:36:11,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:36:11,607 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-24 00:36:11,607 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:36:11,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:36:11,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1052447146, now seen corresponding path program 1 times [2021-02-24 00:36:11,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:36:11,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621555568] [2021-02-24 00:36:11,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:36:11,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:36:11,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:11,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:36:11,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:11,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:36:11,782 WARN L141 QuantifierPusher]: treesize reduction 6, result has 87.0 percent of original size [2021-02-24 00:36:11,783 WARN L147 QuantifierPusher]: treesize reduction 6, result has 87.0 percent of original size 40 [2021-02-24 00:36:11,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:11,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:36:11,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:11,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:36:12,085 WARN L202 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2021-02-24 00:36:12,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:36:12,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:36:12,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:12,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:36:12,320 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 00:36:12,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621555568] [2021-02-24 00:36:12,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:36:12,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 00:36:12,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933607481] [2021-02-24 00:36:12,322 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 00:36:12,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:36:12,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 00:36:12,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-24 00:36:12,323 INFO L87 Difference]: Start difference. First operand 58572 states and 71312 transitions. Second operand 6 states. [2021-02-24 00:36:28,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:36:28,252 INFO L93 Difference]: Finished difference Result 156608 states and 190208 transitions. [2021-02-24 00:36:28,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 00:36:28,253 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 435 [2021-02-24 00:36:28,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:36:28,426 INFO L225 Difference]: With dead ends: 156608 [2021-02-24 00:36:28,426 INFO L226 Difference]: Without dead ends: 98333 [2021-02-24 00:36:28,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-24 00:36:28,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98333 states. [2021-02-24 00:36:39,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98333 to 98219. [2021-02-24 00:36:39,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98219 states. [2021-02-24 00:36:39,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98219 states to 98219 states and 118222 transitions. [2021-02-24 00:36:39,870 INFO L78 Accepts]: Start accepts. Automaton has 98219 states and 118222 transitions. Word has length 435 [2021-02-24 00:36:39,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:36:39,871 INFO L480 AbstractCegarLoop]: Abstraction has 98219 states and 118222 transitions. [2021-02-24 00:36:39,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 00:36:39,871 INFO L276 IsEmpty]: Start isEmpty. Operand 98219 states and 118222 transitions. [2021-02-24 00:36:39,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2021-02-24 00:36:39,976 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:36:39,978 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 00:36:39,978 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-24 00:36:39,978 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:36:39,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:36:39,981 INFO L82 PathProgramCache]: Analyzing trace with hash 964094813, now seen corresponding path program 1 times [2021-02-24 00:36:39,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:36:39,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512993339] [2021-02-24 00:36:39,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:36:40,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:36:40,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:40,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:36:40,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:40,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:36:40,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:40,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:36:40,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:40,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:36:40,765 WARN L202 SmtUtils]: Spent 550.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2021-02-24 00:36:40,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:36:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:36:40,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:36:40,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:36:41,025 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 00:36:41,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512993339] [2021-02-24 00:36:41,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:36:41,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 00:36:41,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835757153] [2021-02-24 00:36:41,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:36:41,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:36:41,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:36:41,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:36:41,029 INFO L87 Difference]: Start difference. First operand 98219 states and 118222 transitions. Second operand 5 states. [2021-02-24 00:36:58,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:36:58,231 INFO L93 Difference]: Finished difference Result 196944 states and 236986 transitions. [2021-02-24 00:36:58,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 00:36:58,232 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 435 [2021-02-24 00:36:58,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:36:58,431 INFO L225 Difference]: With dead ends: 196944 [2021-02-24 00:36:58,432 INFO L226 Difference]: Without dead ends: 99503 [2021-02-24 00:36:58,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-24 00:36:58,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99503 states. [2021-02-24 00:37:10,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99503 to 98781. [2021-02-24 00:37:10,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98781 states. [2021-02-24 00:37:10,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98781 states to 98781 states and 118831 transitions. [2021-02-24 00:37:10,776 INFO L78 Accepts]: Start accepts. Automaton has 98781 states and 118831 transitions. Word has length 435 [2021-02-24 00:37:10,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:37:10,777 INFO L480 AbstractCegarLoop]: Abstraction has 98781 states and 118831 transitions. [2021-02-24 00:37:10,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:37:10,777 INFO L276 IsEmpty]: Start isEmpty. Operand 98781 states and 118831 transitions. [2021-02-24 00:37:10,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2021-02-24 00:37:10,856 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:37:10,856 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 00:37:10,857 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-24 00:37:10,857 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:37:10,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:37:10,858 INFO L82 PathProgramCache]: Analyzing trace with hash -212309535, now seen corresponding path program 1 times [2021-02-24 00:37:10,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:37:10,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326309357] [2021-02-24 00:37:10,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:37:10,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:37:10,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:10,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:37:10,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:10,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:37:10,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:10,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:37:11,290 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2021-02-24 00:37:11,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:37:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:37:11,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:37:11,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:37:11,718 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 00:37:11,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326309357] [2021-02-24 00:37:11,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:37:11,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 00:37:11,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902996627] [2021-02-24 00:37:11,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 00:37:11,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:37:11,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 00:37:11,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 00:37:11,721 INFO L87 Difference]: Start difference. First operand 98781 states and 118831 transitions. Second operand 4 states. [2021-02-24 00:37:41,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:37:41,745 INFO L93 Difference]: Finished difference Result 293245 states and 352955 transitions. [2021-02-24 00:37:41,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 00:37:41,746 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 436 [2021-02-24 00:37:41,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:37:42,305 INFO L225 Difference]: With dead ends: 293245 [2021-02-24 00:37:42,305 INFO L226 Difference]: Without dead ends: 196729 [2021-02-24 00:37:42,430 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 00:37:42,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196729 states.