/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 19:14:34,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 19:14:34,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 19:14:34,659 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 19:14:34,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 19:14:34,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 19:14:34,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 19:14:34,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 19:14:34,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 19:14:34,687 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 19:14:34,689 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 19:14:34,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 19:14:34,691 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 19:14:34,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 19:14:34,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 19:14:34,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 19:14:34,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 19:14:34,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 19:14:34,722 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 19:14:34,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 19:14:34,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 19:14:34,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 19:14:34,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 19:14:34,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 19:14:34,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 19:14:34,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 19:14:34,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 19:14:34,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 19:14:34,770 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 19:14:34,795 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 19:14:34,795 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 19:14:34,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 19:14:34,800 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 19:14:34,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 19:14:34,801 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 19:14:34,801 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 19:14:34,801 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 19:14:34,801 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 19:14:34,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 19:14:34,803 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 19:14:34,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 19:14:34,803 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 19:14:34,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 19:14:34,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 19:14:34,804 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 19:14:34,805 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 19:14:34,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 19:14:34,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 19:14:34,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 19:14:34,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 19:14:34,806 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 19:14:34,806 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 19:14:35,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 19:14:35,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 19:14:35,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 19:14:35,218 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 19:14:35,219 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 19:14:35,220 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-02-23 19:14:35,316 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50d90a3e3/a898ab114db54faaa803e18da8d3d467/FLAG189811f62 [2021-02-23 19:14:36,099 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 19:14:36,101 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-02-23 19:14:36,120 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50d90a3e3/a898ab114db54faaa803e18da8d3d467/FLAG189811f62 [2021-02-23 19:14:36,280 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50d90a3e3/a898ab114db54faaa803e18da8d3d467 [2021-02-23 19:14:36,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 19:14:36,297 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 19:14:36,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 19:14:36,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 19:14:36,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 19:14:36,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 07:14:36" (1/1) ... [2021-02-23 19:14:36,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6354b839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:14:36, skipping insertion in model container [2021-02-23 19:14:36,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 07:14:36" (1/1) ... [2021-02-23 19:14:36,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 19:14:36,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 19:14:36,734 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.UNBOUNDED.pals.c.v+lhb-reducer.c[13576,13589] [2021-02-23 19:14:36,746 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.UNBOUNDED.pals.c.v+lhb-reducer.c[14223,14236] [2021-02-23 19:14:36,760 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.UNBOUNDED.pals.c.v+lhb-reducer.c[15499,15512] [2021-02-23 19:14:36,773 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.UNBOUNDED.pals.c.v+lhb-reducer.c[16475,16488] [2021-02-23 19:14:36,837 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.UNBOUNDED.pals.c.v+lhb-reducer.c[24946,24959] [2021-02-23 19:14:36,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 19:14:36,935 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 19:14:37,112 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.UNBOUNDED.pals.c.v+lhb-reducer.c[13576,13589] [2021-02-23 19:14:37,119 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.UNBOUNDED.pals.c.v+lhb-reducer.c[14223,14236] [2021-02-23 19:14:37,129 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.UNBOUNDED.pals.c.v+lhb-reducer.c[15499,15512] [2021-02-23 19:14:37,138 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.UNBOUNDED.pals.c.v+lhb-reducer.c[16475,16488] [2021-02-23 19:14:37,181 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.UNBOUNDED.pals.c.v+lhb-reducer.c[24946,24959] [2021-02-23 19:14:37,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 19:14:37,256 INFO L208 MainTranslator]: Completed translation [2021-02-23 19:14:37,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:14:37 WrapperNode [2021-02-23 19:14:37,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 19:14:37,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 19:14:37,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 19:14:37,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 19:14:37,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:14:37" (1/1) ... [2021-02-23 19:14:37,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:14:37" (1/1) ... [2021-02-23 19:14:37,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:14:37" (1/1) ... [2021-02-23 19:14:37,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:14:37" (1/1) ... [2021-02-23 19:14:37,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:14:37" (1/1) ... [2021-02-23 19:14:37,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:14:37" (1/1) ... [2021-02-23 19:14:37,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:14:37" (1/1) ... [2021-02-23 19:14:37,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 19:14:37,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 19:14:37,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 19:14:37,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 19:14:37,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:14:37" (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 [2021-02-23 19:14:37,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 19:14:37,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 19:14:37,578 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 19:14:37,578 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 19:14:37,578 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 19:14:37,579 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 19:14:37,579 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 19:14:37,579 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 19:14:37,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 19:14:37,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-02-23 19:14:37,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2021-02-23 19:14:37,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-02-23 19:14:37,582 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-02-23 19:14:37,582 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 19:14:37,582 INFO L130 BoogieDeclarations]: Found specification of procedure read [2021-02-23 19:14:37,582 INFO L130 BoogieDeclarations]: Found specification of procedure write [2021-02-23 19:14:37,582 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2021-02-23 19:14:37,583 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2021-02-23 19:14:37,583 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2021-02-23 19:14:37,583 INFO L130 BoogieDeclarations]: Found specification of procedure init [2021-02-23 19:14:37,583 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-02-23 19:14:37,583 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 19:14:37,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 19:14:37,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 19:14:37,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 19:14:37,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 19:14:37,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 19:14:37,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 19:14:39,559 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 19:14:39,560 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 19:14:39,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 07:14:39 BoogieIcfgContainer [2021-02-23 19:14:39,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 19:14:39,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 19:14:39,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 19:14:39,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 19:14:39,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 07:14:36" (1/3) ... [2021-02-23 19:14:39,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@be1f95b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 07:14:39, skipping insertion in model container [2021-02-23 19:14:39,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:14:37" (2/3) ... [2021-02-23 19:14:39,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@be1f95b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 07:14:39, skipping insertion in model container [2021-02-23 19:14:39,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 07:14:39" (3/3) ... [2021-02-23 19:14:39,574 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-02-23 19:14:39,583 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 19:14:39,593 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2021-02-23 19:14:39,617 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-02-23 19:14:39,645 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 19:14:39,646 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 19:14:39,646 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 19:14:39,646 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 19:14:39,646 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 19:14:39,646 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 19:14:39,646 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 19:14:39,646 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 19:14:39,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states. [2021-02-23 19:14:39,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2021-02-23 19:14:39,779 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:14:39,780 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] [2021-02-23 19:14:39,781 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:14:39,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:14:39,787 INFO L82 PathProgramCache]: Analyzing trace with hash -240008595, now seen corresponding path program 1 times [2021-02-23 19:14:39,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:14:39,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039099553] [2021-02-23 19:14:39,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:14:39,892 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:14:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:40,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:40,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:40,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:40,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:14:40,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:40,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 19:14:40,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:40,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:41,372 WARN L202 SmtUtils]: Spent 528.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2021-02-23 19:14:41,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:14:41,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:41,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:41,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:41,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:14:41,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039099553] [2021-02-23 19:14:41,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:14:41,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 19:14:41,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386679869] [2021-02-23 19:14:41,899 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 19:14:41,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:14:41,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 19:14:41,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-23 19:14:41,920 INFO L87 Difference]: Start difference. First operand 1131 states. Second operand 5 states. [2021-02-23 19:14:49,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:14:49,487 INFO L93 Difference]: Finished difference Result 2978 states and 3867 transitions. [2021-02-23 19:14:49,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 19:14:49,488 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 422 [2021-02-23 19:14:49,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:14:49,522 INFO L225 Difference]: With dead ends: 2978 [2021-02-23 19:14:49,522 INFO L226 Difference]: Without dead ends: 1759 [2021-02-23 19:14:49,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 19:14:49,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1759 states. [2021-02-23 19:14:49,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1759 to 1636. [2021-02-23 19:14:49,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1636 states. [2021-02-23 19:14:49,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 1945 transitions. [2021-02-23 19:14:49,762 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 1945 transitions. Word has length 422 [2021-02-23 19:14:49,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:14:49,763 INFO L480 AbstractCegarLoop]: Abstraction has 1636 states and 1945 transitions. [2021-02-23 19:14:49,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 19:14:49,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 1945 transitions. [2021-02-23 19:14:49,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2021-02-23 19:14:49,777 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:14:49,778 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] [2021-02-23 19:14:49,778 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 19:14:49,779 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:14:49,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:14:49,780 INFO L82 PathProgramCache]: Analyzing trace with hash -673939087, now seen corresponding path program 1 times [2021-02-23 19:14:49,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:14:49,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118382996] [2021-02-23 19:14:49,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:14:49,786 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:14:49,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:49,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:49,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:49,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:49,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 19:14:49,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:49,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:50,289 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2021-02-23 19:14:50,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:14:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:50,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:50,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:50,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:14:50,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118382996] [2021-02-23 19:14:50,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:14:50,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 19:14:50,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057367029] [2021-02-23 19:14:50,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 19:14:50,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:14:50,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 19:14:50,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 19:14:50,517 INFO L87 Difference]: Start difference. First operand 1636 states and 1945 transitions. Second operand 4 states. [2021-02-23 19:14:56,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:14:56,913 INFO L93 Difference]: Finished difference Result 4499 states and 5402 transitions. [2021-02-23 19:14:56,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 19:14:56,914 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 423 [2021-02-23 19:14:56,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:14:56,933 INFO L225 Difference]: With dead ends: 4499 [2021-02-23 19:14:56,933 INFO L226 Difference]: Without dead ends: 3083 [2021-02-23 19:14:56,939 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 [2021-02-23 19:14:56,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3083 states. [2021-02-23 19:14:57,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3083 to 1638. [2021-02-23 19:14:57,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1638 states. [2021-02-23 19:14:57,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1638 states to 1638 states and 1947 transitions. [2021-02-23 19:14:57,105 INFO L78 Accepts]: Start accepts. Automaton has 1638 states and 1947 transitions. Word has length 423 [2021-02-23 19:14:57,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:14:57,107 INFO L480 AbstractCegarLoop]: Abstraction has 1638 states and 1947 transitions. [2021-02-23 19:14:57,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 19:14:57,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1638 states and 1947 transitions. [2021-02-23 19:14:57,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2021-02-23 19:14:57,119 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:14:57,121 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] [2021-02-23 19:14:57,121 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 19:14:57,121 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:14:57,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:14:57,123 INFO L82 PathProgramCache]: Analyzing trace with hash 203069424, now seen corresponding path program 1 times [2021-02-23 19:14:57,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:14:57,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143680905] [2021-02-23 19:14:57,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:14:57,127 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:14:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:57,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:57,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:57,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:57,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 19:14:57,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:57,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:57,650 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2021-02-23 19:14:57,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:14:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:14:57,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:14:57,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:14:57,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:14:57,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143680905] [2021-02-23 19:14:57,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:14:57,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 19:14:57,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509689246] [2021-02-23 19:14:57,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 19:14:57,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:14:57,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 19:14:57,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 19:14:57,963 INFO L87 Difference]: Start difference. First operand 1638 states and 1947 transitions. Second operand 4 states. [2021-02-23 19:15:04,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:15:04,260 INFO L93 Difference]: Finished difference Result 4234 states and 5074 transitions. [2021-02-23 19:15:04,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 19:15:04,261 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 424 [2021-02-23 19:15:04,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:15:04,277 INFO L225 Difference]: With dead ends: 4234 [2021-02-23 19:15:04,277 INFO L226 Difference]: Without dead ends: 3023 [2021-02-23 19:15:04,280 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 [2021-02-23 19:15:04,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3023 states. [2021-02-23 19:15:04,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3023 to 2900. [2021-02-23 19:15:04,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2900 states. [2021-02-23 19:15:04,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2900 states to 2900 states and 3480 transitions. [2021-02-23 19:15:04,512 INFO L78 Accepts]: Start accepts. Automaton has 2900 states and 3480 transitions. Word has length 424 [2021-02-23 19:15:04,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:15:04,513 INFO L480 AbstractCegarLoop]: Abstraction has 2900 states and 3480 transitions. [2021-02-23 19:15:04,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 19:15:04,514 INFO L276 IsEmpty]: Start isEmpty. Operand 2900 states and 3480 transitions. [2021-02-23 19:15:04,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2021-02-23 19:15:04,521 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:15:04,522 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] [2021-02-23 19:15:04,522 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 19:15:04,522 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:15:04,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:15:04,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1454172048, now seen corresponding path program 1 times [2021-02-23 19:15:04,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:15:04,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79889284] [2021-02-23 19:15:04,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:15:04,527 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:15:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:04,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:04,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:04,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:04,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:15:04,709 WARN L141 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size [2021-02-23 19:15:04,711 WARN L147 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size 30 [2021-02-23 19:15:04,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:04,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 19:15:04,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:04,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:05,140 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2021-02-23 19:15:05,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:15:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:05,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:05,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:05,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:15:05,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79889284] [2021-02-23 19:15:05,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:15:05,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 19:15:05,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258219867] [2021-02-23 19:15:05,425 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 19:15:05,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:15:05,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 19:15:05,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 19:15:05,426 INFO L87 Difference]: Start difference. First operand 2900 states and 3480 transitions. Second operand 6 states. [2021-02-23 19:15:11,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:15:11,802 INFO L93 Difference]: Finished difference Result 7902 states and 9522 transitions. [2021-02-23 19:15:11,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 19:15:11,802 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 424 [2021-02-23 19:15:11,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:15:11,825 INFO L225 Difference]: With dead ends: 7902 [2021-02-23 19:15:11,825 INFO L226 Difference]: Without dead ends: 5193 [2021-02-23 19:15:11,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 19:15:11,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5193 states. [2021-02-23 19:15:12,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5193 to 5080. [2021-02-23 19:15:12,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5080 states. [2021-02-23 19:15:12,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5080 states to 5080 states and 6090 transitions. [2021-02-23 19:15:12,303 INFO L78 Accepts]: Start accepts. Automaton has 5080 states and 6090 transitions. Word has length 424 [2021-02-23 19:15:12,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:15:12,304 INFO L480 AbstractCegarLoop]: Abstraction has 5080 states and 6090 transitions. [2021-02-23 19:15:12,305 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 19:15:12,305 INFO L276 IsEmpty]: Start isEmpty. Operand 5080 states and 6090 transitions. [2021-02-23 19:15:12,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2021-02-23 19:15:12,317 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:15:12,317 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] [2021-02-23 19:15:12,317 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 19:15:12,317 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:15:12,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:15:12,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1479128673, now seen corresponding path program 1 times [2021-02-23 19:15:12,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:15:12,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835708584] [2021-02-23 19:15:12,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:15:12,337 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:15:12,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:12,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:12,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:12,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:12,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:15:12,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:12,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 19:15:12,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:12,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:12,979 WARN L202 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2021-02-23 19:15:12,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:15:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:13,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:13,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:13,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:15:13,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835708584] [2021-02-23 19:15:13,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:15:13,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 19:15:13,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354089258] [2021-02-23 19:15:13,169 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 19:15:13,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:15:13,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 19:15:13,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-23 19:15:13,170 INFO L87 Difference]: Start difference. First operand 5080 states and 6090 transitions. Second operand 5 states. [2021-02-23 19:15:19,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:15:19,635 INFO L93 Difference]: Finished difference Result 14485 states and 17391 transitions. [2021-02-23 19:15:19,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 19:15:19,636 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 424 [2021-02-23 19:15:19,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:15:19,679 INFO L225 Difference]: With dead ends: 14485 [2021-02-23 19:15:19,679 INFO L226 Difference]: Without dead ends: 9671 [2021-02-23 19:15:19,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 19:15:19,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9671 states. [2021-02-23 19:15:20,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9671 to 9542. [2021-02-23 19:15:20,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9542 states. [2021-02-23 19:15:20,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9542 states to 9542 states and 11415 transitions. [2021-02-23 19:15:20,555 INFO L78 Accepts]: Start accepts. Automaton has 9542 states and 11415 transitions. Word has length 424 [2021-02-23 19:15:20,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:15:20,556 INFO L480 AbstractCegarLoop]: Abstraction has 9542 states and 11415 transitions. [2021-02-23 19:15:20,556 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 19:15:20,556 INFO L276 IsEmpty]: Start isEmpty. Operand 9542 states and 11415 transitions. [2021-02-23 19:15:20,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2021-02-23 19:15:20,626 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:15:20,627 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] [2021-02-23 19:15:20,627 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 19:15:20,627 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:15:20,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:15:20,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1573175023, now seen corresponding path program 1 times [2021-02-23 19:15:20,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:15:20,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524161748] [2021-02-23 19:15:20,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:15:20,632 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:15:20,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:20,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:20,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:20,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:20,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 19:15:20,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:20,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:21,054 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2021-02-23 19:15:21,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:15:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:21,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:21,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:21,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:15:21,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524161748] [2021-02-23 19:15:21,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:15:21,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 19:15:21,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952819122] [2021-02-23 19:15:21,200 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 19:15:21,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:15:21,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 19:15:21,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 19:15:21,201 INFO L87 Difference]: Start difference. First operand 9542 states and 11415 transitions. Second operand 4 states. [2021-02-23 19:15:28,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:15:28,431 INFO L93 Difference]: Finished difference Result 28029 states and 33567 transitions. [2021-02-23 19:15:28,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 19:15:28,432 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 425 [2021-02-23 19:15:28,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:15:28,494 INFO L225 Difference]: With dead ends: 28029 [2021-02-23 19:15:28,494 INFO L226 Difference]: Without dead ends: 18803 [2021-02-23 19:15:28,518 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 [2021-02-23 19:15:28,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18803 states. [2021-02-23 19:15:29,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18803 to 9552. [2021-02-23 19:15:29,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9552 states. [2021-02-23 19:15:29,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9552 states to 9552 states and 11425 transitions. [2021-02-23 19:15:29,578 INFO L78 Accepts]: Start accepts. Automaton has 9552 states and 11425 transitions. Word has length 425 [2021-02-23 19:15:29,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:15:29,579 INFO L480 AbstractCegarLoop]: Abstraction has 9552 states and 11425 transitions. [2021-02-23 19:15:29,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 19:15:29,579 INFO L276 IsEmpty]: Start isEmpty. Operand 9552 states and 11425 transitions. [2021-02-23 19:15:29,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2021-02-23 19:15:29,600 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:15:29,601 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] [2021-02-23 19:15:29,601 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 19:15:29,601 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:15:29,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:15:29,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1206793692, now seen corresponding path program 1 times [2021-02-23 19:15:29,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:15:29,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24902778] [2021-02-23 19:15:29,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:15:29,606 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:15:29,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:29,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:29,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:29,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:29,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 19:15:29,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:29,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:30,081 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2021-02-23 19:15:30,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:15:30,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:30,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:30,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:30,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:15:30,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24902778] [2021-02-23 19:15:30,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:15:30,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 19:15:30,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954199671] [2021-02-23 19:15:30,353 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 19:15:30,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:15:30,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 19:15:30,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 19:15:30,354 INFO L87 Difference]: Start difference. First operand 9552 states and 11425 transitions. Second operand 4 states. [2021-02-23 19:15:37,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:15:37,605 INFO L93 Difference]: Finished difference Result 26603 states and 31843 transitions. [2021-02-23 19:15:37,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 19:15:37,606 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 426 [2021-02-23 19:15:37,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:15:37,645 INFO L225 Difference]: With dead ends: 26603 [2021-02-23 19:15:37,646 INFO L226 Difference]: Without dead ends: 18382 [2021-02-23 19:15:37,665 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 [2021-02-23 19:15:37,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18382 states. [2021-02-23 19:15:39,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18382 to 18253. [2021-02-23 19:15:39,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18253 states. [2021-02-23 19:15:39,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18253 states to 18253 states and 21745 transitions. [2021-02-23 19:15:39,305 INFO L78 Accepts]: Start accepts. Automaton has 18253 states and 21745 transitions. Word has length 426 [2021-02-23 19:15:39,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:15:39,305 INFO L480 AbstractCegarLoop]: Abstraction has 18253 states and 21745 transitions. [2021-02-23 19:15:39,305 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 19:15:39,306 INFO L276 IsEmpty]: Start isEmpty. Operand 18253 states and 21745 transitions. [2021-02-23 19:15:39,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2021-02-23 19:15:39,333 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:15:39,334 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] [2021-02-23 19:15:39,334 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 19:15:39,334 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:15:39,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:15:39,335 INFO L82 PathProgramCache]: Analyzing trace with hash -942363996, now seen corresponding path program 1 times [2021-02-23 19:15:39,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:15:39,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811903054] [2021-02-23 19:15:39,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:15:39,338 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:15:39,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:39,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:39,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:39,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:39,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:15:39,490 WARN L141 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size [2021-02-23 19:15:39,491 WARN L147 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size 30 [2021-02-23 19:15:39,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:39,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 19:15:39,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:39,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:39,933 WARN L202 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2021-02-23 19:15:39,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:15:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:39,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:39,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:40,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:15:40,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811903054] [2021-02-23 19:15:40,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:15:40,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 19:15:40,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250072020] [2021-02-23 19:15:40,136 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 19:15:40,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:15:40,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 19:15:40,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 19:15:40,137 INFO L87 Difference]: Start difference. First operand 18253 states and 21745 transitions. Second operand 6 states. [2021-02-23 19:15:49,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:15:49,004 INFO L93 Difference]: Finished difference Result 52029 states and 61949 transitions. [2021-02-23 19:15:49,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 19:15:49,005 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 426 [2021-02-23 19:15:49,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:15:49,085 INFO L225 Difference]: With dead ends: 52029 [2021-02-23 19:15:49,086 INFO L226 Difference]: Without dead ends: 34068 [2021-02-23 19:15:49,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 19:15:49,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34068 states. [2021-02-23 19:15:52,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34068 to 33960. [2021-02-23 19:15:52,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33960 states. [2021-02-23 19:15:52,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33960 states to 33960 states and 40167 transitions. [2021-02-23 19:15:52,439 INFO L78 Accepts]: Start accepts. Automaton has 33960 states and 40167 transitions. Word has length 426 [2021-02-23 19:15:52,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:15:52,439 INFO L480 AbstractCegarLoop]: Abstraction has 33960 states and 40167 transitions. [2021-02-23 19:15:52,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 19:15:52,439 INFO L276 IsEmpty]: Start isEmpty. Operand 33960 states and 40167 transitions. [2021-02-23 19:15:52,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2021-02-23 19:15:52,483 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:15:52,484 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] [2021-02-23 19:15:52,484 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 19:15:52,484 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:15:52,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:15:52,485 INFO L82 PathProgramCache]: Analyzing trace with hash -177023315, now seen corresponding path program 1 times [2021-02-23 19:15:52,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:15:52,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145700062] [2021-02-23 19:15:52,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:15:52,489 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:15:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:52,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:52,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:52,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:52,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:15:52,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:52,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 19:15:52,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:52,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:52,982 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2021-02-23 19:15:52,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:15:52,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:53,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:53,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:53,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:15:53,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145700062] [2021-02-23 19:15:53,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:15:53,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 19:15:53,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065716362] [2021-02-23 19:15:53,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 19:15:53,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:15:53,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 19:15:53,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-23 19:15:53,297 INFO L87 Difference]: Start difference. First operand 33960 states and 40167 transitions. Second operand 5 states. [2021-02-23 19:16:02,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:16:02,589 INFO L93 Difference]: Finished difference Result 68379 states and 80824 transitions. [2021-02-23 19:16:02,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 19:16:02,590 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 426 [2021-02-23 19:16:02,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:16:02,644 INFO L225 Difference]: With dead ends: 68379 [2021-02-23 19:16:02,644 INFO L226 Difference]: Without dead ends: 35188 [2021-02-23 19:16:02,699 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 [2021-02-23 19:16:02,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35188 states. [2021-02-23 19:16:06,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35188 to 34514. [2021-02-23 19:16:06,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34514 states. [2021-02-23 19:16:06,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34514 states to 34514 states and 40768 transitions. [2021-02-23 19:16:06,638 INFO L78 Accepts]: Start accepts. Automaton has 34514 states and 40768 transitions. Word has length 426 [2021-02-23 19:16:06,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:16:06,639 INFO L480 AbstractCegarLoop]: Abstraction has 34514 states and 40768 transitions. [2021-02-23 19:16:06,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 19:16:06,639 INFO L276 IsEmpty]: Start isEmpty. Operand 34514 states and 40768 transitions. [2021-02-23 19:16:06,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2021-02-23 19:16:06,664 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:16:06,664 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] [2021-02-23 19:16:06,665 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 19:16:06,665 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:16:06,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:16:06,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1365151065, now seen corresponding path program 1 times [2021-02-23 19:16:06,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:16:06,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695190824] [2021-02-23 19:16:06,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:16:06,669 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:16:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:06,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:06,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:06,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:06,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 19:16:06,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:06,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:07,247 WARN L202 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2021-02-23 19:16:07,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:16:07,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:07,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:07,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:07,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:16:07,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695190824] [2021-02-23 19:16:07,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:16:07,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 19:16:07,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345431241] [2021-02-23 19:16:07,396 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 19:16:07,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:16:07,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 19:16:07,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 19:16:07,397 INFO L87 Difference]: Start difference. First operand 34514 states and 40768 transitions. Second operand 4 states. [2021-02-23 19:16:20,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:16:20,046 INFO L93 Difference]: Finished difference Result 100482 states and 118804 transitions. [2021-02-23 19:16:20,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 19:16:20,047 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 427 [2021-02-23 19:16:20,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:16:20,152 INFO L225 Difference]: With dead ends: 100482 [2021-02-23 19:16:20,152 INFO L226 Difference]: Without dead ends: 68204 [2021-02-23 19:16:20,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 19:16:20,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68204 states. [2021-02-23 19:16:24,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68204 to 34554. [2021-02-23 19:16:24,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34554 states. [2021-02-23 19:16:24,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34554 states to 34554 states and 40808 transitions. [2021-02-23 19:16:24,189 INFO L78 Accepts]: Start accepts. Automaton has 34554 states and 40808 transitions. Word has length 427 [2021-02-23 19:16:24,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:16:24,189 INFO L480 AbstractCegarLoop]: Abstraction has 34554 states and 40808 transitions. [2021-02-23 19:16:24,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 19:16:24,190 INFO L276 IsEmpty]: Start isEmpty. Operand 34554 states and 40808 transitions. [2021-02-23 19:16:24,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2021-02-23 19:16:24,215 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:16:24,216 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] [2021-02-23 19:16:24,216 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 19:16:24,216 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:16:24,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:16:24,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1447748400, now seen corresponding path program 1 times [2021-02-23 19:16:24,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:16:24,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593068638] [2021-02-23 19:16:24,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:16:24,221 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:16:24,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:24,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:24,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:24,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:24,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:16:24,374 WARN L141 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size [2021-02-23 19:16:24,376 WARN L147 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size 30 [2021-02-23 19:16:24,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:24,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 19:16:24,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:24,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:24,887 WARN L202 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2021-02-23 19:16:24,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:16:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:24,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:24,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:25,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:16:25,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593068638] [2021-02-23 19:16:25,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:16:25,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 19:16:25,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795787554] [2021-02-23 19:16:25,069 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 19:16:25,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:16:25,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 19:16:25,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 19:16:25,069 INFO L87 Difference]: Start difference. First operand 34554 states and 40808 transitions. Second operand 6 states. [2021-02-23 19:16:35,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:16:35,257 INFO L93 Difference]: Finished difference Result 70590 states and 83240 transitions. [2021-02-23 19:16:35,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 19:16:35,260 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 428 [2021-02-23 19:16:35,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:16:35,298 INFO L225 Difference]: With dead ends: 70590 [2021-02-23 19:16:35,298 INFO L226 Difference]: Without dead ends: 36672 [2021-02-23 19:16:35,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 19:16:35,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36672 states. [2021-02-23 19:16:39,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36672 to 35702. [2021-02-23 19:16:39,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35702 states. [2021-02-23 19:16:39,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35702 states to 35702 states and 42030 transitions. [2021-02-23 19:16:39,666 INFO L78 Accepts]: Start accepts. Automaton has 35702 states and 42030 transitions. Word has length 428 [2021-02-23 19:16:39,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:16:39,667 INFO L480 AbstractCegarLoop]: Abstraction has 35702 states and 42030 transitions. [2021-02-23 19:16:39,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 19:16:39,667 INFO L276 IsEmpty]: Start isEmpty. Operand 35702 states and 42030 transitions. [2021-02-23 19:16:39,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2021-02-23 19:16:39,705 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:16:39,705 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] [2021-02-23 19:16:39,706 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-23 19:16:39,706 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:16:39,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:16:39,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1082126673, now seen corresponding path program 1 times [2021-02-23 19:16:39,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:16:39,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439793261] [2021-02-23 19:16:39,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:16:39,715 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:16:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 19:16:39,776 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 19:16:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 19:16:39,874 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 19:16:40,343 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 19:16:40,343 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 19:16:40,344 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-23 19:16:40,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 07:16:40 BoogieIcfgContainer [2021-02-23 19:16:40,397 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 19:16:40,398 INFO L168 Benchmark]: Toolchain (without parser) took 124113.61 ms. Allocated memory was 152.0 MB in the beginning and 4.0 GB in the end (delta: 3.8 GB). Free memory was 107.4 MB in the beginning and 3.0 GB in the end (delta: -2.9 GB). Peak memory consumption was 932.3 MB. Max. memory is 8.0 GB. [2021-02-23 19:16:40,399 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 152.0 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 19:16:40,399 INFO L168 Benchmark]: CACSL2BoogieTranslator took 958.70 ms. Allocated memory is still 152.0 MB. Free memory was 106.3 MB in the beginning and 101.3 MB in the end (delta: 5.0 MB). Peak memory consumption was 11.6 MB. Max. memory is 8.0 GB. [2021-02-23 19:16:40,400 INFO L168 Benchmark]: Boogie Preprocessor took 200.46 ms. Allocated memory is still 152.0 MB. Free memory was 101.3 MB in the beginning and 129.4 MB in the end (delta: -28.1 MB). Peak memory consumption was 2.3 MB. Max. memory is 8.0 GB. [2021-02-23 19:16:40,400 INFO L168 Benchmark]: RCFGBuilder took 2105.44 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 129.4 MB in the beginning and 111.9 MB in the end (delta: 17.5 MB). Peak memory consumption was 104.0 MB. Max. memory is 8.0 GB. [2021-02-23 19:16:40,401 INFO L168 Benchmark]: TraceAbstraction took 120830.44 ms. Allocated memory was 182.5 MB in the beginning and 4.0 GB in the end (delta: 3.8 GB). Free memory was 111.9 MB in the beginning and 3.0 GB in the end (delta: -2.9 GB). Peak memory consumption was 905.6 MB. Max. memory is 8.0 GB. [2021-02-23 19:16:40,403 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 152.0 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 958.70 ms. Allocated memory is still 152.0 MB. Free memory was 106.3 MB in the beginning and 101.3 MB in the end (delta: 5.0 MB). Peak memory consumption was 11.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 200.46 ms. Allocated memory is still 152.0 MB. Free memory was 101.3 MB in the beginning and 129.4 MB in the end (delta: -28.1 MB). Peak memory consumption was 2.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 2105.44 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 129.4 MB in the beginning and 111.9 MB in the end (delta: 17.5 MB). Peak memory consumption was 104.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 120830.44 ms. Allocated memory was 182.5 MB in the beginning and 4.0 GB in the end (delta: 3.8 GB). Free memory was 111.9 MB in the beginning and 3.0 GB in the end (delta: -2.9 GB). Peak memory consumption was 905.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 816]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1] int __return_main; [L17] msg_t nomsg = (msg_t )-1; [L18] port_t p12 = 0; [L19] char p12_old = '\x0'; [L20] char p12_new = '\x0'; [L21] _Bool ep12 = 0; [L22] port_t p13 = 0; [L23] char p13_old = '\x0'; [L24] char p13_new = '\x0'; [L25] _Bool ep13 = 0; [L26] port_t p21 = 0; [L27] char p21_old = '\x0'; [L28] char p21_new = '\x0'; [L29] _Bool ep21 = 0; [L30] port_t p23 = 0; [L31] char p23_old = '\x0'; [L32] char p23_new = '\x0'; [L33] _Bool ep23 = 0; [L34] port_t p31 = 0; [L35] char p31_old = '\x0'; [L36] char p31_new = '\x0'; [L37] _Bool ep31 = 0; [L38] port_t p32 = 0; [L39] char p32_old = '\x0'; [L40] char p32_new = '\x0'; [L41] _Bool ep32 = 0; [L42] char id1 = '\x0'; [L43] unsigned char r1 = '\x0'; [L44] char st1 = '\x0'; [L45] char nl1 = '\x0'; [L46] char m1 = '\x0'; [L47] char max1 = '\x0'; [L48] _Bool mode1 = 0; [L49] char id2 = '\x0'; [L50] unsigned char r2 = '\x0'; [L51] char st2 = '\x0'; [L52] char nl2 = '\x0'; [L53] char m2 = '\x0'; [L54] char max2 = '\x0'; [L55] _Bool mode2 = 0; [L56] char id3 = '\x0'; [L57] unsigned char r3 = '\x0'; [L58] char st3 = '\x0'; [L59] char nl3 = '\x0'; [L60] char m3 = '\x0'; [L61] char max3 = '\x0'; [L62] _Bool mode3 = 0; [L66] void (*nodes[3])() = { &node1, &node2, &node3 }; [L70] int __return_1718; [L71] int __return_1846; [L72] int __return_1964; [L73] int __return_2082; [L74] int __return_2816; [L75] int __return_2785; [L76] int __return_2726; [L77] int __return_2692; [L78] int __return_2315; [L79] int __return_2587; [L80] int __return_2553; [L81] int __return_2473; [L82] int __return_2205; [L85] int main__c1; [L86] int main__i2; [L87] main__c1 = 0 [L88] ep12 = __VERIFIER_nondet_bool() [L89] ep13 = __VERIFIER_nondet_bool() [L90] ep21 = __VERIFIER_nondet_bool() [L91] ep23 = __VERIFIER_nondet_bool() [L92] ep31 = __VERIFIER_nondet_bool() [L93] ep32 = __VERIFIER_nondet_bool() [L94] id1 = __VERIFIER_nondet_char() [L95] r1 = __VERIFIER_nondet_uchar() [L96] st1 = __VERIFIER_nondet_char() [L97] nl1 = __VERIFIER_nondet_char() [L98] m1 = __VERIFIER_nondet_char() [L99] max1 = __VERIFIER_nondet_char() [L100] mode1 = __VERIFIER_nondet_bool() [L101] id2 = __VERIFIER_nondet_char() [L102] r2 = __VERIFIER_nondet_uchar() [L103] st2 = __VERIFIER_nondet_char() [L104] nl2 = __VERIFIER_nondet_char() [L105] m2 = __VERIFIER_nondet_char() [L106] max2 = __VERIFIER_nondet_char() [L107] mode2 = __VERIFIER_nondet_bool() [L108] id3 = __VERIFIER_nondet_char() [L109] r3 = __VERIFIER_nondet_uchar() [L110] st3 = __VERIFIER_nondet_char() [L111] nl3 = __VERIFIER_nondet_char() [L112] m3 = __VERIFIER_nondet_char() [L113] max3 = __VERIFIER_nondet_char() [L114] mode3 = __VERIFIER_nondet_bool() [L116] _Bool init__r121; [L117] _Bool init__r131; [L118] _Bool init__r211; [L119] _Bool init__r231; [L120] _Bool init__r311; [L121] _Bool init__r321; [L122] _Bool init__r122; [L123] int init__tmp; [L124] _Bool init__r132; [L125] int init__tmp___0; [L126] _Bool init__r212; [L127] int init__tmp___1; [L128] _Bool init__r232; [L129] int init__tmp___2; [L130] _Bool init__r312; [L131] int init__tmp___3; [L132] _Bool init__r322; [L133] int init__tmp___4; [L134] int init__tmp___5; [L135] init__r121 = ep12 [L136] init__r131 = ep13 [L137] init__r211 = ep21 [L138] init__r231 = ep23 [L139] init__r311 = ep31 [L140] init__r321 = ep32 [L141] COND FALSE !(!(init__r121 == 0)) [L2958] COND FALSE !(!(init__r131 == 0)) [L2974] init__tmp = 0 [L145] init__r122 = (_Bool)init__tmp [L146] COND FALSE !(!(init__r131 == 0)) [L2935] COND FALSE !(!(init__r121 == 0)) [L2951] init__tmp___0 = 0 [L150] init__r132 = (_Bool)init__tmp___0 [L151] COND FALSE !(!(init__r211 == 0)) [L2912] COND FALSE !(!(init__r231 == 0)) [L2928] init__tmp___1 = 0 [L155] init__r212 = (_Bool)init__tmp___1 [L156] COND FALSE !(!(init__r231 == 0)) [L2889] COND FALSE !(!(init__r211 == 0)) [L2905] init__tmp___2 = 0 [L160] init__r232 = (_Bool)init__tmp___2 [L161] COND FALSE !(!(init__r311 == 0)) [L2866] COND FALSE !(!(init__r321 == 0)) [L2882] init__tmp___3 = 0 [L165] init__r312 = (_Bool)init__tmp___3 [L166] COND FALSE !(!(init__r321 == 0)) [L2843] COND FALSE !(!(init__r311 == 0)) [L2859] init__tmp___4 = 0 [L170] init__r322 = (_Bool)init__tmp___4 [L171] COND TRUE ((int)id1) != ((int)id2) [L173] COND TRUE ((int)id1) != ((int)id3) [L175] COND TRUE ((int)id2) != ((int)id3) [L177] COND TRUE ((int)id1) >= 0 [L179] COND TRUE ((int)id2) >= 0 [L181] COND TRUE ((int)id3) >= 0 [L183] COND TRUE ((int)r1) == 0 [L185] COND TRUE ((int)r2) == 0 [L187] COND TRUE ((int)r3) == 0 [L189] COND TRUE ((int)max1) == ((int)id1) [L191] COND TRUE ((int)max2) == ((int)id2) [L193] COND TRUE ((int)max3) == ((int)id3) [L195] COND TRUE ((int)st1) == 0 [L197] COND TRUE ((int)st2) == 0 [L199] COND TRUE ((int)st3) == 0 [L201] COND TRUE ((int)nl1) == 0 [L203] COND TRUE ((int)nl2) == 0 [L205] COND TRUE ((int)nl3) == 0 [L207] COND TRUE ((int)mode1) == 0 [L209] COND TRUE ((int)mode2) == 0 [L211] COND TRUE ((int)mode3) == 0 [L213] init__tmp___5 = 1 [L214] __return_1718 = init__tmp___5 [L215] main__i2 = __return_1718 [L216] COND TRUE main__i2 != 0 [L218] p12_old = nomsg [L219] p12_new = nomsg [L220] p13_old = nomsg [L221] p13_new = nomsg [L222] p21_old = nomsg [L223] p21_new = nomsg [L224] p23_old = nomsg [L225] p23_new = nomsg [L226] p31_old = nomsg [L227] p31_new = nomsg [L228] p32_old = nomsg [L229] p32_new = nomsg [L230] main__i2 = 0 [L232] COND FALSE !(!(mode1 == 0)) [L238] COND TRUE ((int)r1) < 2 [L240] COND FALSE !(!(ep12 == 0)) [L251] COND FALSE !(!(ep13 == 0)) [L262] mode1 = 1 [L264] COND FALSE !(!(mode2 == 0)) [L270] COND TRUE ((int)r2) < 2 [L272] COND FALSE !(!(ep21 == 0)) [L283] COND FALSE !(!(ep23 == 0)) [L294] mode2 = 1 [L296] COND FALSE !(!(mode3 == 0)) [L302] COND TRUE ((int)r3) < 2 [L304] COND FALSE !(!(ep31 == 0)) [L315] COND FALSE !(!(ep32 == 0)) [L326] mode3 = 1 [L327] p12_old = p12_new [L328] p12_new = nomsg [L329] p13_old = p13_new [L330] p13_new = nomsg [L331] p21_old = p21_new [L332] p21_new = nomsg [L333] p23_old = p23_new [L334] p23_new = nomsg [L335] p31_old = p31_new [L336] p31_new = nomsg [L337] p32_old = p32_new [L338] p32_new = nomsg [L340] int check__tmp; [L341] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L343] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L345] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L347] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L349] COND FALSE !(((int)r1) >= 2) [L355] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L357] COND TRUE ((int)r1) < 2 [L359] COND FALSE !(((int)r1) >= 2) [L365] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L367] COND TRUE ((int)r1) < 2 [L369] check__tmp = 1 [L370] __return_1846 = check__tmp [L371] main__c1 = __return_1846 [L373] _Bool __tmp_1; [L374] __tmp_1 = main__c1 [L375] _Bool assert__arg; [L376] assert__arg = __tmp_1 [L377] COND FALSE !(assert__arg == 0) [L384] COND TRUE !(mode1 == 0) [L386] COND FALSE !(r1 == 255) [L392] r1 = r1 + 1 [L393] COND FALSE !(!(ep21 == 0)) [L401] COND FALSE !(!(ep31 == 0)) [L409] COND FALSE !(((int)r1) == 2) [L415] mode1 = 0 [L417] COND TRUE !(mode2 == 0) [L419] COND FALSE !(r2 == 255) [L425] r2 = r2 + 1 [L426] COND FALSE !(!(ep12 == 0)) [L434] COND FALSE !(!(ep32 == 0)) [L442] COND FALSE !(((int)r2) == 2) [L448] mode2 = 0 [L450] COND TRUE !(mode3 == 0) [L452] COND FALSE !(r3 == 255) [L458] r3 = r3 + 1 [L459] COND FALSE !(!(ep13 == 0)) [L467] COND FALSE !(!(ep23 == 0)) [L475] COND FALSE !(((int)r3) == 2) [L481] mode3 = 0 [L482] p12_old = p12_new [L483] p12_new = nomsg [L484] p13_old = p13_new [L485] p13_new = nomsg [L486] p21_old = p21_new [L487] p21_new = nomsg [L488] p23_old = p23_new [L489] p23_new = nomsg [L490] p31_old = p31_new [L491] p31_new = nomsg [L492] p32_old = p32_new [L493] p32_new = nomsg [L495] int check__tmp; [L496] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L498] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L500] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L502] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L504] COND FALSE !(((int)r1) >= 2) [L510] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L512] COND TRUE ((int)r1) < 2 [L514] COND FALSE !(((int)r1) >= 2) [L520] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L522] COND TRUE ((int)r1) < 2 [L524] check__tmp = 1 [L525] __return_1964 = check__tmp [L526] main__c1 = __return_1964 [L528] _Bool __tmp_2; [L529] __tmp_2 = main__c1 [L530] _Bool assert__arg; [L531] assert__arg = __tmp_2 [L532] COND FALSE !(assert__arg == 0) [L539] COND FALSE !(!(mode1 == 0)) [L545] COND TRUE ((int)r1) < 2 [L547] COND FALSE !(!(ep12 == 0)) [L558] COND FALSE !(!(ep13 == 0)) [L569] mode1 = 1 [L571] COND FALSE !(!(mode2 == 0)) [L577] COND TRUE ((int)r2) < 2 [L579] COND FALSE !(!(ep21 == 0)) [L590] COND FALSE !(!(ep23 == 0)) [L601] mode2 = 1 [L603] COND FALSE !(!(mode3 == 0)) [L609] COND TRUE ((int)r3) < 2 [L611] COND FALSE !(!(ep31 == 0)) [L622] COND FALSE !(!(ep32 == 0)) [L633] mode3 = 1 [L634] p12_old = p12_new [L635] p12_new = nomsg [L636] p13_old = p13_new [L637] p13_new = nomsg [L638] p21_old = p21_new [L639] p21_new = nomsg [L640] p23_old = p23_new [L641] p23_new = nomsg [L642] p31_old = p31_new [L643] p31_new = nomsg [L644] p32_old = p32_new [L645] p32_new = nomsg [L647] int check__tmp; [L648] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L650] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L652] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L654] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L656] COND FALSE !(((int)r1) >= 2) [L662] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L664] COND TRUE ((int)r1) < 2 [L666] COND FALSE !(((int)r1) >= 2) [L672] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L674] COND TRUE ((int)r1) < 2 [L676] check__tmp = 1 [L677] __return_2082 = check__tmp [L678] main__c1 = __return_2082 [L680] _Bool __tmp_3; [L681] __tmp_3 = main__c1 [L682] _Bool assert__arg; [L683] assert__arg = __tmp_3 [L684] COND FALSE !(assert__arg == 0) [L691] COND TRUE !(mode1 == 0) [L693] COND FALSE !(r1 == 255) [L699] r1 = r1 + 1 [L700] COND FALSE !(!(ep21 == 0)) [L708] COND FALSE !(!(ep31 == 0)) [L716] COND TRUE ((int)r1) == 2 [L718] COND TRUE ((int)max1) == ((int)id1) [L720] st1 = 1 [L721] mode1 = 0 [L723] COND TRUE !(mode2 == 0) [L725] COND FALSE !(r2 == 255) [L731] r2 = r2 + 1 [L732] COND FALSE !(!(ep12 == 0)) [L740] COND FALSE !(!(ep32 == 0)) [L748] COND TRUE ((int)r2) == 2 [L750] COND TRUE ((int)max2) == ((int)id2) [L752] st2 = 1 [L753] mode2 = 0 [L755] COND TRUE !(mode3 == 0) [L757] COND FALSE !(r3 == 255) [L763] r3 = r3 + 1 [L764] COND FALSE !(!(ep13 == 0)) [L772] COND FALSE !(!(ep23 == 0)) [L780] COND TRUE ((int)r3) == 2 [L782] COND TRUE ((int)max3) == ((int)id3) [L784] st3 = 1 [L785] mode3 = 0 [L786] p12_old = p12_new [L787] p12_new = nomsg [L788] p13_old = p13_new [L789] p13_new = nomsg [L790] p21_old = p21_new [L791] p21_new = nomsg [L792] p23_old = p23_new [L793] p23_new = nomsg [L794] p31_old = p31_new [L795] p31_new = nomsg [L796] p32_old = p32_new [L797] p32_new = nomsg [L799] int check__tmp; [L800] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L806] check__tmp = 0 [L807] __return_2816 = check__tmp [L808] main__c1 = __return_2816 [L810] _Bool __tmp_4; [L811] __tmp_4 = main__c1 [L812] _Bool assert__arg; [L813] assert__arg = __tmp_4 [L814] COND TRUE assert__arg == 0 [L816] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 1139 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 120.7s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 89.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22409 SDtfs, 18866 SDslu, 14223 SDs, 0 SdLazy, 22900 SolverSat, 157 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 52.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35702occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 20.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 46715 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...