/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 20:52:13,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 20:52:13,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 20:52:13,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 20:52:13,752 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 20:52:13,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 20:52:13,757 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 20:52:13,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 20:52:13,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 20:52:13,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 20:52:13,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 20:52:13,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 20:52:13,769 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 20:52:13,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 20:52:13,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 20:52:13,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 20:52:13,776 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 20:52:13,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 20:52:13,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 20:52:13,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 20:52:13,785 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 20:52:13,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 20:52:13,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 20:52:13,789 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 20:52:13,795 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 20:52:13,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 20:52:13,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 20:52:13,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 20:52:13,824 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 20:52:13,839 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 20:52:13,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 20:52:13,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 20:52:13,840 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 20:52:13,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 20:52:13,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 20:52:13,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 20:52:13,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 20:52:13,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 20:52:13,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 20:52:13,841 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 20:52:13,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 20:52:13,842 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 20:52:13,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 20:52:13,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 20:52:13,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 20:52:13,842 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 20:52:13,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 20:52:13,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 20:52:13,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 20:52:13,843 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 20:52:13,844 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 20:52:13,844 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 20:52:14,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 20:52:14,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 20:52:14,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 20:52:14,192 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 20:52:14,192 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 20:52:14,193 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_valuebound5.c [2021-05-02 20:52:14,248 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b074ff36b/d5da3b492a4b41b58adc4fade95da0a4/FLAGdb8a2889b [2021-05-02 20:52:14,622 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 20:52:14,622 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_valuebound5.c [2021-05-02 20:52:14,627 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b074ff36b/d5da3b492a4b41b58adc4fade95da0a4/FLAGdb8a2889b [2021-05-02 20:52:15,047 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b074ff36b/d5da3b492a4b41b58adc4fade95da0a4 [2021-05-02 20:52:15,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 20:52:15,051 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 20:52:15,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 20:52:15,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 20:52:15,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 20:52:15,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 08:52:15" (1/1) ... [2021-05-02 20:52:15,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@580896ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:52:15, skipping insertion in model container [2021-05-02 20:52:15,057 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 08:52:15" (1/1) ... [2021-05-02 20:52:15,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 20:52:15,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 20:52:15,170 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_valuebound5.c[525,538] [2021-05-02 20:52:15,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 20:52:15,188 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 20:52:15,197 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_valuebound5.c[525,538] [2021-05-02 20:52:15,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 20:52:15,217 INFO L208 MainTranslator]: Completed translation [2021-05-02 20:52:15,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:52:15 WrapperNode [2021-05-02 20:52:15,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 20:52:15,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 20:52:15,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 20:52:15,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 20:52:15,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:52:15" (1/1) ... [2021-05-02 20:52:15,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:52:15" (1/1) ... [2021-05-02 20:52:15,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:52:15" (1/1) ... [2021-05-02 20:52:15,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:52:15" (1/1) ... [2021-05-02 20:52:15,276 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:52:15" (1/1) ... [2021-05-02 20:52:15,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:52:15" (1/1) ... [2021-05-02 20:52:15,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:52:15" (1/1) ... [2021-05-02 20:52:15,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 20:52:15,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 20:52:15,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 20:52:15,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 20:52:15,283 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:52:15" (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 [2021-05-02 20:52:15,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 20:52:15,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 20:52:15,340 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 20:52:15,340 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 20:52:15,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 20:52:15,340 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 20:52:15,340 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 20:52:15,341 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 20:52:15,341 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 20:52:15,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 20:52:15,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 20:52:15,341 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 20:52:15,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 20:52:15,342 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 20:52:15,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 20:52:15,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 20:52:15,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 20:52:15,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 20:52:15,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 20:52:15,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 20:52:15,569 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 20:52:15,570 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 20:52:15,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:52:15 BoogieIcfgContainer [2021-05-02 20:52:15,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 20:52:15,571 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 20:52:15,571 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 20:52:15,572 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 20:52:15,574 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:52:15" (1/1) ... [2021-05-02 20:52:15,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 08:52:15 BasicIcfg [2021-05-02 20:52:15,589 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 20:52:15,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 20:52:15,590 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 20:52:15,592 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 20:52:15,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 08:52:15" (1/4) ... [2021-05-02 20:52:15,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49b72cda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 08:52:15, skipping insertion in model container [2021-05-02 20:52:15,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:52:15" (2/4) ... [2021-05-02 20:52:15,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49b72cda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 08:52:15, skipping insertion in model container [2021-05-02 20:52:15,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:52:15" (3/4) ... [2021-05-02 20:52:15,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49b72cda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 08:52:15, skipping insertion in model container [2021-05-02 20:52:15,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 08:52:15" (4/4) ... [2021-05-02 20:52:15,595 INFO L111 eAbstractionObserver]: Analyzing ICFG geo3-ll_valuebound5.cJordan [2021-05-02 20:52:15,599 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 20:52:15,603 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 20:52:15,616 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 20:52:15,631 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 20:52:15,632 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 20:52:15,632 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 20:52:15,632 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 20:52:15,632 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 20:52:15,632 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 20:52:15,632 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 20:52:15,632 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 20:52:15,642 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 20:52:15,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 20:52:15,647 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:52:15,648 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:52:15,648 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:52:15,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:52:15,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1338008438, now seen corresponding path program 1 times [2021-05-02 20:52:15,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:52:15,659 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639824852] [2021-05-02 20:52:15,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:52:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:52:15,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 20:52:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:52:15,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 20:52:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:52:15,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 20:52:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:52:15,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-05-02 20:52:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:52:15,973 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 20:52:15,974 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:52:15,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639824852] [2021-05-02 20:52:15,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639824852] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:52:15,975 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:52:15,975 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 20:52:15,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503110169] [2021-05-02 20:52:15,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 20:52:15,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:52:15,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 20:52:15,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:52:15,993 INFO L87 Difference]: Start difference. First operand has 31 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 20:52:16,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:52:16,087 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2021-05-02 20:52:16,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 20:52:16,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2021-05-02 20:52:16,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:52:16,095 INFO L225 Difference]: With dead ends: 31 [2021-05-02 20:52:16,095 INFO L226 Difference]: Without dead ends: 26 [2021-05-02 20:52:16,098 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:52:16,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-05-02 20:52:16,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-05-02 20:52:16,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 20:52:16,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-05-02 20:52:16,130 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 29 [2021-05-02 20:52:16,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:52:16,130 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-05-02 20:52:16,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 20:52:16,131 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-05-02 20:52:16,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 20:52:16,132 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:52:16,132 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:52:16,133 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 20:52:16,133 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:52:16,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:52:16,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1251333530, now seen corresponding path program 1 times [2021-05-02 20:52:16,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:52:16,138 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778095305] [2021-05-02 20:52:16,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:52:16,165 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:52:16,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [270798981] [2021-05-02 20:52:16,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:52:16,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:52:16,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 20:52:16,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:52:16,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:16,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:16,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:16,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:16,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:16,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:16,511 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-02 20:52:16,511 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:52:16,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778095305] [2021-05-02 20:52:16,512 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:52:16,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270798981] [2021-05-02 20:52:16,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270798981] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:52:16,512 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:52:16,512 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-02 20:52:16,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144153765] [2021-05-02 20:52:16,514 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 20:52:16,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:52:16,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 20:52:16,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 20:52:16,516 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 20:52:16,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:52:16,600 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2021-05-02 20:52:16,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 20:52:16,602 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2021-05-02 20:52:16,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:52:16,605 INFO L225 Difference]: With dead ends: 34 [2021-05-02 20:52:16,606 INFO L226 Difference]: Without dead ends: 33 [2021-05-02 20:52:16,607 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 56.6ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-02 20:52:16,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-05-02 20:52:16,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-05-02 20:52:16,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 20:52:16,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2021-05-02 20:52:16,621 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 29 [2021-05-02 20:52:16,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:52:16,622 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2021-05-02 20:52:16,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 20:52:16,622 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2021-05-02 20:52:16,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-02 20:52:16,624 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:52:16,624 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:52:16,847 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 20:52:16,847 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:52:16,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:52:16,848 INFO L82 PathProgramCache]: Analyzing trace with hash -284720885, now seen corresponding path program 1 times [2021-05-02 20:52:16,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:52:16,848 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344838689] [2021-05-02 20:52:16,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:52:16,862 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:52:16,862 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [801035888] [2021-05-02 20:52:16,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:52:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:52:16,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-02 20:52:16,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:52:16,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:16,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:16,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:16,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:17,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:17,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:17,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:17,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:17,137 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-02 20:52:17,138 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:52:17,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344838689] [2021-05-02 20:52:17,138 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:52:17,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801035888] [2021-05-02 20:52:17,138 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801035888] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:52:17,138 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:52:17,138 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-02 20:52:17,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446482269] [2021-05-02 20:52:17,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 20:52:17,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:52:17,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 20:52:17,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-05-02 20:52:17,140 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-05-02 20:52:17,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:52:17,402 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2021-05-02 20:52:17,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 20:52:17,402 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 36 [2021-05-02 20:52:17,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:52:17,403 INFO L225 Difference]: With dead ends: 41 [2021-05-02 20:52:17,403 INFO L226 Difference]: Without dead ends: 40 [2021-05-02 20:52:17,404 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 113.1ms TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-05-02 20:52:17,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-05-02 20:52:17,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-05-02 20:52:17,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 25 states have (on average 1.08) internal successors, (27), 26 states have internal predecessors, (27), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 20:52:17,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2021-05-02 20:52:17,409 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 36 [2021-05-02 20:52:17,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:52:17,409 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2021-05-02 20:52:17,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-05-02 20:52:17,410 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2021-05-02 20:52:17,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-02 20:52:17,410 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:52:17,411 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:52:17,624 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:52:17,625 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:52:17,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:52:17,625 INFO L82 PathProgramCache]: Analyzing trace with hash -590068614, now seen corresponding path program 2 times [2021-05-02 20:52:17,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:52:17,626 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561901022] [2021-05-02 20:52:17,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:52:17,640 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:52:17,640 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1460848416] [2021-05-02 20:52:17,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:52:17,831 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 20:52:17,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:52:17,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 46 conjunts are in the unsatisfiable core [2021-05-02 20:52:17,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:52:17,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:17,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:17,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:17,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:17,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:17,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:17,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:17,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:17,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:17,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:17,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:17,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:18,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:18,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:18,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:18,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:18,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:18,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:18,212 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-02 20:52:18,212 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:52:18,212 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561901022] [2021-05-02 20:52:18,212 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:52:18,212 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460848416] [2021-05-02 20:52:18,212 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460848416] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:52:18,212 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:52:18,213 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-05-02 20:52:18,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319001548] [2021-05-02 20:52:18,213 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 20:52:18,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:52:18,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 20:52:18,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-05-02 20:52:18,214 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-05-02 20:52:18,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:52:18,699 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2021-05-02 20:52:18,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 20:52:18,700 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 43 [2021-05-02 20:52:18,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:52:18,701 INFO L225 Difference]: With dead ends: 48 [2021-05-02 20:52:18,701 INFO L226 Difference]: Without dead ends: 47 [2021-05-02 20:52:18,701 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 204.2ms TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-05-02 20:52:18,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-02 20:52:18,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-05-02 20:52:18,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 20:52:18,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2021-05-02 20:52:18,706 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 43 [2021-05-02 20:52:18,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:52:18,706 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2021-05-02 20:52:18,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-05-02 20:52:18,707 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2021-05-02 20:52:18,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-05-02 20:52:18,708 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:52:18,708 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:52:18,911 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:52:18,911 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:52:18,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:52:18,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1588029909, now seen corresponding path program 3 times [2021-05-02 20:52:18,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:52:18,912 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135752514] [2021-05-02 20:52:18,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:52:18,927 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:52:18,928 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [502805305] [2021-05-02 20:52:18,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:52:18,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-05-02 20:52:18,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:52:18,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-02 20:52:18,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:52:19,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:19,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:19,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:19,206 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-05-02 20:52:19,206 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:52:19,206 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135752514] [2021-05-02 20:52:19,206 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:52:19,206 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502805305] [2021-05-02 20:52:19,206 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502805305] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:52:19,206 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:52:19,206 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-02 20:52:19,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018571924] [2021-05-02 20:52:19,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 20:52:19,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:52:19,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 20:52:19,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-02 20:52:19,208 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-05-02 20:52:26,567 WARN L205 SmtUtils]: Spent 5.05 s on a formula simplification that was a NOOP. DAG size: 32 [2021-05-02 20:52:28,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:52:28,586 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2021-05-02 20:52:28,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 20:52:28,586 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 50 [2021-05-02 20:52:28,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:52:28,587 INFO L225 Difference]: With dead ends: 48 [2021-05-02 20:52:28,587 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 20:52:28,587 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 5216.7ms TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-05-02 20:52:28,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 20:52:28,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 20:52:28,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-02 20:52:28,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 20:52:28,588 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2021-05-02 20:52:28,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:52:28,588 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 20:52:28,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-05-02 20:52:28,588 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 20:52:28,588 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 20:52:28,793 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:52:28,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 08:52:28 BasicIcfg [2021-05-02 20:52:28,796 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 20:52:28,796 INFO L168 Benchmark]: Toolchain (without parser) took 13745.66 ms. Allocated memory was 178.3 MB in the beginning and 231.7 MB in the end (delta: 53.5 MB). Free memory was 143.5 MB in the beginning and 130.0 MB in the end (delta: 13.5 MB). Peak memory consumption was 67.7 MB. Max. memory is 8.0 GB. [2021-05-02 20:52:28,796 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 178.3 MB. Free memory is still 159.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 20:52:28,797 INFO L168 Benchmark]: CACSL2BoogieTranslator took 166.21 ms. Allocated memory is still 178.3 MB. Free memory was 143.3 MB in the beginning and 133.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-02 20:52:28,797 INFO L168 Benchmark]: Boogie Preprocessor took 62.81 ms. Allocated memory is still 178.3 MB. Free memory was 133.6 MB in the beginning and 162.0 MB in the end (delta: -28.4 MB). Peak memory consumption was 3.2 MB. Max. memory is 8.0 GB. [2021-05-02 20:52:28,797 INFO L168 Benchmark]: RCFGBuilder took 288.40 ms. Allocated memory is still 178.3 MB. Free memory was 162.0 MB in the beginning and 147.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-02 20:52:28,797 INFO L168 Benchmark]: IcfgTransformer took 17.50 ms. Allocated memory is still 178.3 MB. Free memory was 147.3 MB in the beginning and 145.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 20:52:28,797 INFO L168 Benchmark]: TraceAbstraction took 13205.96 ms. Allocated memory was 178.3 MB in the beginning and 231.7 MB in the end (delta: 53.5 MB). Free memory was 145.7 MB in the beginning and 130.0 MB in the end (delta: 15.7 MB). Peak memory consumption was 70.8 MB. Max. memory is 8.0 GB. [2021-05-02 20:52:28,798 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 178.3 MB. Free memory is still 159.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 166.21 ms. Allocated memory is still 178.3 MB. Free memory was 143.3 MB in the beginning and 133.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 62.81 ms. Allocated memory is still 178.3 MB. Free memory was 133.6 MB in the beginning and 162.0 MB in the end (delta: -28.4 MB). Peak memory consumption was 3.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 288.40 ms. Allocated memory is still 178.3 MB. Free memory was 162.0 MB in the beginning and 147.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 17.50 ms. Allocated memory is still 178.3 MB. Free memory was 147.3 MB in the beginning and 145.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 13205.96 ms. Allocated memory was 178.3 MB in the beginning and 231.7 MB in the end (delta: 53.5 MB). Free memory was 145.7 MB in the beginning and 130.0 MB in the end (delta: 15.7 MB). Peak memory consumption was 70.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13163.6ms, OverallIterations: 5, TraceHistogramMax: 4, EmptinessCheckTime: 13.7ms, AutomataDifference: 10340.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 118 SDtfs, 101 SDslu, 487 SDs, 0 SdLazy, 377 SolverSat, 44 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4955.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 133 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 5638.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=4, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 44.0ms AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 53.1ms SsaConstructionTime, 279.3ms SatisfiabilityAnalysisTime, 1250.8ms InterpolantComputationTime, 187 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 182 ConstructedInterpolants, 0 QuantifiedInterpolants, 859 SizeOfPredicates, 14 NumberOfNonLiveVariables, 575 ConjunctsInSsa, 110 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 81/112 InterpolantCoveringCapability, 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...