/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/loop-industry-pattern/aiob_4.c.v+lh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 19:00:17,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 19:00:17,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 19:00:17,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 19:00:17,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 19:00:17,689 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 19:00:17,691 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 19:00:17,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 19:00:17,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 19:00:17,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 19:00:17,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 19:00:17,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 19:00:17,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 19:00:17,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 19:00:17,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 19:00:17,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 19:00:17,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 19:00:17,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 19:00:17,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 19:00:17,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 19:00:17,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 19:00:17,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 19:00:17,740 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 19:00:17,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 19:00:17,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 19:00:17,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 19:00:17,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 19:00:17,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 19:00:17,777 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 19:00:17,803 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 19:00:17,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 19:00:17,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 19:00:17,810 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 19:00:17,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 19:00:17,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 19:00:17,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 19:00:17,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 19:00:17,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 19:00:17,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 19:00:17,813 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 19:00:17,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 19:00:17,814 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 19:00:17,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 19:00:17,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 19:00:17,815 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 19:00:17,815 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 19:00:17,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 19:00:17,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 19:00:17,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 19:00:17,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 19:00:17,817 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 19:00:17,817 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 19:00:18,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 19:00:18,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 19:00:18,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 19:00:18,382 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 19:00:18,383 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 19:00:18,384 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2021-02-23 19:00:18,482 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8121eacc/e0b82f6e20b84bb881624403e56737b9/FLAG36d3ccd63 [2021-02-23 19:00:19,272 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 19:00:19,273 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2021-02-23 19:00:19,283 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8121eacc/e0b82f6e20b84bb881624403e56737b9/FLAG36d3ccd63 [2021-02-23 19:00:19,611 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8121eacc/e0b82f6e20b84bb881624403e56737b9 [2021-02-23 19:00:19,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 19:00:19,629 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 19:00:19,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 19:00:19,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 19:00:19,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 19:00:19,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 07:00:19" (1/1) ... [2021-02-23 19:00:19,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6561faff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:00:19, skipping insertion in model container [2021-02-23 19:00:19,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 07:00:19" (1/1) ... [2021-02-23 19:00:19,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 19:00:19,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 19:00:19,928 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c[8507,8520] [2021-02-23 19:00:19,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 19:00:19,949 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 19:00:20,048 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c[8507,8520] [2021-02-23 19:00:20,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 19:00:20,087 INFO L208 MainTranslator]: Completed translation [2021-02-23 19:00:20,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:00:20 WrapperNode [2021-02-23 19:00:20,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 19:00:20,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 19:00:20,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 19:00:20,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 19:00:20,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:00:20" (1/1) ... [2021-02-23 19:00:20,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:00:20" (1/1) ... [2021-02-23 19:00:20,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:00:20" (1/1) ... [2021-02-23 19:00:20,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:00:20" (1/1) ... [2021-02-23 19:00:20,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:00:20" (1/1) ... [2021-02-23 19:00:20,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:00:20" (1/1) ... [2021-02-23 19:00:20,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:00:20" (1/1) ... [2021-02-23 19:00:20,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 19:00:20,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 19:00:20,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 19:00:20,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 19:00:20,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:00:20" (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 19:00:20,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 19:00:20,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 19:00:20,313 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 19:00:20,313 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 19:00:20,313 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 19:00:20,314 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 19:00:20,314 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 19:00:20,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 19:00:20,314 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2021-02-23 19:00:20,314 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2021-02-23 19:00:20,314 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 19:00:20,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 19:00:20,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 19:00:20,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 19:00:20,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 19:00:20,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 19:00:20,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 19:00:20,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 19:00:20,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 19:00:20,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 19:00:21,331 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 19:00:21,332 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 19:00:21,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 07:00:21 BoogieIcfgContainer [2021-02-23 19:00:21,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 19:00:21,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 19:00:21,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 19:00:21,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 19:00:21,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 07:00:19" (1/3) ... [2021-02-23 19:00:21,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d8d0592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 07:00:21, skipping insertion in model container [2021-02-23 19:00:21,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:00:20" (2/3) ... [2021-02-23 19:00:21,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d8d0592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 07:00:21, skipping insertion in model container [2021-02-23 19:00:21,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 07:00:21" (3/3) ... [2021-02-23 19:00:21,352 INFO L111 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lh-reducer.c [2021-02-23 19:00:21,361 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 19:00:21,368 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 19:00:21,391 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 19:00:21,419 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 19:00:21,419 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 19:00:21,419 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 19:00:21,419 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 19:00:21,420 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 19:00:21,420 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 19:00:21,420 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 19:00:21,420 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 19:00:21,448 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states. [2021-02-23 19:00:21,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-02-23 19:00:21,474 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:00:21,476 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:00:21,476 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:00:21,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:00:21,484 INFO L82 PathProgramCache]: Analyzing trace with hash 46424617, now seen corresponding path program 1 times [2021-02-23 19:00:21,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:00:21,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096192718] [2021-02-23 19:00:21,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:00:21,584 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:00:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:00:22,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:22,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:00:22,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:22,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:00:22,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:22,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:00:22,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:22,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:00:22,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:00:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:00:22,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:22,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:00:22,372 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 19:00:22,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096192718] [2021-02-23 19:00:22,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:00:22,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 19:00:22,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058343544] [2021-02-23 19:00:22,394 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 19:00:22,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:00:22,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 19:00:22,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-23 19:00:22,420 INFO L87 Difference]: Start difference. First operand 368 states. Second operand 5 states. [2021-02-23 19:00:23,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:00:23,413 INFO L93 Difference]: Finished difference Result 421 states and 429 transitions. [2021-02-23 19:00:23,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 19:00:23,416 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 322 [2021-02-23 19:00:23,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:00:23,448 INFO L225 Difference]: With dead ends: 421 [2021-02-23 19:00:23,449 INFO L226 Difference]: Without dead ends: 354 [2021-02-23 19:00:23,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-02-23 19:00:23,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-02-23 19:00:23,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 340. [2021-02-23 19:00:23,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2021-02-23 19:00:23,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 340 transitions. [2021-02-23 19:00:23,554 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 340 transitions. Word has length 322 [2021-02-23 19:00:23,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:00:23,556 INFO L480 AbstractCegarLoop]: Abstraction has 340 states and 340 transitions. [2021-02-23 19:00:23,556 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 19:00:23,557 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 340 transitions. [2021-02-23 19:00:23,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-02-23 19:00:23,563 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:00:23,564 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:00:23,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 19:00:23,565 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:00:23,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:00:23,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1363534718, now seen corresponding path program 1 times [2021-02-23 19:00:23,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:00:23,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055688506] [2021-02-23 19:00:23,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:00:25,067 WARN L202 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 134 DAG size of output: 115 [2021-02-23 19:00:25,085 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 19:00:25,089 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:00:25,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:00:25,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:25,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:00:25,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:25,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:00:25,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:25,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:00:25,435 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 19:00:25,437 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 19:00:25,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:25,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:00:25,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:00:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:00:25,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:25,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:00:25,735 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 19:00:25,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055688506] [2021-02-23 19:00:25,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:00:25,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 19:00:25,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995814013] [2021-02-23 19:00:25,742 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 19:00:25,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:00:25,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 19:00:25,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 19:00:25,745 INFO L87 Difference]: Start difference. First operand 340 states and 340 transitions. Second operand 6 states. [2021-02-23 19:00:26,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:00:26,675 INFO L93 Difference]: Finished difference Result 379 states and 379 transitions. [2021-02-23 19:00:26,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 19:00:26,680 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 339 [2021-02-23 19:00:26,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:00:26,685 INFO L225 Difference]: With dead ends: 379 [2021-02-23 19:00:26,685 INFO L226 Difference]: Without dead ends: 371 [2021-02-23 19:00:26,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-02-23 19:00:26,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-02-23 19:00:26,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 357. [2021-02-23 19:00:26,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2021-02-23 19:00:26,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 357 transitions. [2021-02-23 19:00:26,775 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 357 transitions. Word has length 339 [2021-02-23 19:00:26,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:00:26,781 INFO L480 AbstractCegarLoop]: Abstraction has 357 states and 357 transitions. [2021-02-23 19:00:26,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 19:00:26,782 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 357 transitions. [2021-02-23 19:00:26,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-02-23 19:00:26,792 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:00:26,793 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:00:26,794 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 19:00:26,794 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:00:26,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:00:26,795 INFO L82 PathProgramCache]: Analyzing trace with hash 2085000905, now seen corresponding path program 2 times [2021-02-23 19:00:26,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:00:26,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116392669] [2021-02-23 19:00:26,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY