/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/divbin_valuebound100.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 20:15:26,523 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 20:15:26,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 20:15:26,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 20:15:26,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 20:15:26,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 20:15:26,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 20:15:26,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 20:15:26,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 20:15:26,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 20:15:26,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 20:15:26,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 20:15:26,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 20:15:26,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 20:15:26,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 20:15:26,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 20:15:26,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 20:15:26,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 20:15:26,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 20:15:26,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 20:15:26,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 20:15:26,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 20:15:26,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 20:15:26,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 20:15:26,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 20:15:26,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 20:15:26,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 20:15:26,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 20:15:26,641 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 20:15:26,657 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 20:15:26,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 20:15:26,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 20:15:26,660 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 20:15:26,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 20:15:26,661 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 20:15:26,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 20:15:26,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 20:15:26,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 20:15:26,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 20:15:26,662 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 20:15:26,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 20:15:26,663 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 20:15:26,663 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 20:15:26,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 20:15:26,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 20:15:26,663 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 20:15:26,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 20:15:26,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 20:15:26,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 20:15:26,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 20:15:26,665 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 20:15:26,665 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 20:15:26,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 20:15:27,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 20:15:27,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 20:15:27,015 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 20:15:27,016 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 20:15:27,017 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/divbin_valuebound100.i [2021-05-02 20:15:27,089 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/322a3cb8d/60c1d01c66f44b9097763732c13e5ef2/FLAG0577f8755 [2021-05-02 20:15:27,472 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 20:15:27,473 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin_valuebound100.i [2021-05-02 20:15:27,478 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/322a3cb8d/60c1d01c66f44b9097763732c13e5ef2/FLAG0577f8755 [2021-05-02 20:15:27,497 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/322a3cb8d/60c1d01c66f44b9097763732c13e5ef2 [2021-05-02 20:15:27,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 20:15:27,501 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 20:15:27,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 20:15:27,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 20:15:27,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 20:15:27,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 08:15:27" (1/1) ... [2021-05-02 20:15:27,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ae1d728 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:15:27, skipping insertion in model container [2021-05-02 20:15:27,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 08:15:27" (1/1) ... [2021-05-02 20:15:27,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 20:15:27,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 20:15:27,677 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/divbin_valuebound100.i[958,971] [2021-05-02 20:15:27,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 20:15:27,696 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 20:15:27,707 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/divbin_valuebound100.i[958,971] [2021-05-02 20:15:27,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 20:15:27,749 INFO L208 MainTranslator]: Completed translation [2021-05-02 20:15:27,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:15:27 WrapperNode [2021-05-02 20:15:27,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 20:15:27,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 20:15:27,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 20:15:27,751 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 20:15:27,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:15:27" (1/1) ... [2021-05-02 20:15:27,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:15:27" (1/1) ... [2021-05-02 20:15:27,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:15:27" (1/1) ... [2021-05-02 20:15:27,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:15:27" (1/1) ... [2021-05-02 20:15:27,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:15:27" (1/1) ... [2021-05-02 20:15:27,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:15:27" (1/1) ... [2021-05-02 20:15:27,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:15:27" (1/1) ... [2021-05-02 20:15:27,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 20:15:27,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 20:15:27,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 20:15:27,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 20:15:27,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:15:27" (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 20:15:27,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 20:15:27,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 20:15:27,904 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 20:15:27,904 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 20:15:27,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 20:15:27,905 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 20:15:27,905 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 20:15:27,905 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 20:15:27,905 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-02 20:15:27,905 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-02 20:15:27,905 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 20:15:27,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 20:15:27,905 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2021-05-02 20:15:27,906 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 20:15:27,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 20:15:27,906 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 20:15:27,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 20:15:27,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 20:15:27,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 20:15:27,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 20:15:27,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 20:15:27,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 20:15:28,202 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 20:15:28,202 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-02 20:15:28,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:15:28 BoogieIcfgContainer [2021-05-02 20:15:28,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 20:15:28,204 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 20:15:28,205 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 20:15:28,205 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 20:15:28,207 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:15:28" (1/1) ... [2021-05-02 20:15:28,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 08:15:28 BasicIcfg [2021-05-02 20:15:28,222 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 20:15:28,223 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 20:15:28,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 20:15:28,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 20:15:28,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 08:15:27" (1/4) ... [2021-05-02 20:15:28,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f6fca8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 08:15:28, skipping insertion in model container [2021-05-02 20:15:28,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:15:27" (2/4) ... [2021-05-02 20:15:28,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f6fca8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 08:15:28, skipping insertion in model container [2021-05-02 20:15:28,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:15:28" (3/4) ... [2021-05-02 20:15:28,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f6fca8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 08:15:28, skipping insertion in model container [2021-05-02 20:15:28,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 08:15:28" (4/4) ... [2021-05-02 20:15:28,228 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin_valuebound100.iJordan [2021-05-02 20:15:28,233 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 20:15:28,236 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 20:15:28,251 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 20:15:28,268 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 20:15:28,268 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 20:15:28,268 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 20:15:28,268 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 20:15:28,277 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 20:15:28,277 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 20:15:28,277 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 20:15:28,277 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 20:15:28,291 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 20:15:28,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-05-02 20:15:28,299 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:15:28,300 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:15:28,301 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:15:28,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:15:28,309 INFO L82 PathProgramCache]: Analyzing trace with hash -402483300, now seen corresponding path program 1 times [2021-05-02 20:15:28,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:15:28,316 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082372047] [2021-05-02 20:15:28,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:15:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:15:28,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 20:15:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:15:28,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 20:15:28,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:15:28,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 20:15:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:15:28,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-02 20:15:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:15:28,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-02 20:15:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:15:28,537 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-05-02 20:15:28,538 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:15:28,538 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082372047] [2021-05-02 20:15:28,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082372047] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:15:28,539 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:15:28,539 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 20:15:28,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597268558] [2021-05-02 20:15:28,543 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 20:15:28,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:15:28,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 20:15:28,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:15:28,557 INFO L87 Difference]: Start difference. First operand has 34 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) 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, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 20:15:28,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:15:28,629 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2021-05-02 20:15:28,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 20:15:28,631 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, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2021-05-02 20:15:28,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:15:28,637 INFO L225 Difference]: With dead ends: 34 [2021-05-02 20:15:28,637 INFO L226 Difference]: Without dead ends: 29 [2021-05-02 20:15:28,638 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:15:28,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-02 20:15:28,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-05-02 20:15:28,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 20:15:28,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2021-05-02 20:15:28,667 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 34 [2021-05-02 20:15:28,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:15:28,667 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-05-02 20:15:28,667 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, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 20:15:28,668 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2021-05-02 20:15:28,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-02 20:15:28,669 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:15:28,669 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:15:28,669 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 20:15:28,670 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:15:28,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:15:28,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1131459816, now seen corresponding path program 1 times [2021-05-02 20:15:28,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:15:28,671 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071272640] [2021-05-02 20:15:28,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:15:28,693 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:15:28,694 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1650276881] [2021-05-02 20:15:28,694 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 20:15:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:15:28,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 20:15:28,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:15:28,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:28,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:29,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:29,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:29,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:29,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:29,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:29,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:29,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:29,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:29,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:29,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:29,257 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 20:15:29,257 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:15:29,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071272640] [2021-05-02 20:15:29,258 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:15:29,258 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650276881] [2021-05-02 20:15:29,258 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650276881] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:15:29,258 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:15:29,259 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 20:15:29,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536115303] [2021-05-02 20:15:29,263 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 20:15:29,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:15:29,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 20:15:29,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-05-02 20:15:29,268 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 10 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-05-02 20:15:29,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:15:29,488 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2021-05-02 20:15:29,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 20:15:29,496 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 35 [2021-05-02 20:15:29,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:15:29,498 INFO L225 Difference]: With dead ends: 42 [2021-05-02 20:15:29,498 INFO L226 Difference]: Without dead ends: 41 [2021-05-02 20:15:29,499 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 160.2ms TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-05-02 20:15:29,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-02 20:15:29,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-05-02 20:15:29,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.24) internal successors, (31), 26 states have internal predecessors, (31), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 20:15:29,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2021-05-02 20:15:29,513 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 35 [2021-05-02 20:15:29,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:15:29,514 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2021-05-02 20:15:29,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-05-02 20:15:29,515 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2021-05-02 20:15:29,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-02 20:15:29,517 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:15:29,517 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:15:29,733 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 20:15:29,733 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:15:29,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:15:29,734 INFO L82 PathProgramCache]: Analyzing trace with hash -305154333, now seen corresponding path program 1 times [2021-05-02 20:15:29,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:15:29,734 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043984553] [2021-05-02 20:15:29,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:15:29,746 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:15:29,746 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [311950357] [2021-05-02 20:15:29,746 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 20:15:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:15:29,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 20:15:29,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:15:29,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:29,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:29,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:29,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:29,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:29,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:30,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:30,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:30,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:30,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:30,156 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 20:15:30,157 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:15:30,157 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043984553] [2021-05-02 20:15:30,157 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:15:30,157 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311950357] [2021-05-02 20:15:30,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311950357] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:15:30,157 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:15:30,158 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 20:15:30,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508359864] [2021-05-02 20:15:30,158 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 20:15:30,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:15:30,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 20:15:30,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-05-02 20:15:30,159 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 20:15:30,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:15:30,413 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2021-05-02 20:15:30,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 20:15:30,414 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2021-05-02 20:15:30,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:15:30,415 INFO L225 Difference]: With dead ends: 55 [2021-05-02 20:15:30,415 INFO L226 Difference]: Without dead ends: 54 [2021-05-02 20:15:30,415 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 164.6ms TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-05-02 20:15:30,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-05-02 20:15:30,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 37. [2021-05-02 20:15:30,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 24 states have internal predecessors, (28), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 20:15:30,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2021-05-02 20:15:30,421 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 37 [2021-05-02 20:15:30,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:15:30,421 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2021-05-02 20:15:30,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 20:15:30,421 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2021-05-02 20:15:30,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-02 20:15:30,422 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:15:30,423 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-05-02 20:15:30,640 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:15:30,641 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:15:30,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:15:30,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1858557484, now seen corresponding path program 1 times [2021-05-02 20:15:30,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:15:30,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867555995] [2021-05-02 20:15:30,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:15:30,660 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:15:30,660 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [643576687] [2021-05-02 20:15:30,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 20:15:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:15:30,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2021-05-02 20:15:30,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:15:30,774 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-05-02 20:15:30,775 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:15:30,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867555995] [2021-05-02 20:15:30,775 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:15:30,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643576687] [2021-05-02 20:15:30,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643576687] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:15:30,775 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:15:30,775 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 20:15:30,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905584358] [2021-05-02 20:15:30,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 20:15:30,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:15:30,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 20:15:30,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:15:30,777 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-05-02 20:15:30,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:15:30,790 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2021-05-02 20:15:30,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 20:15:30,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 43 [2021-05-02 20:15:30,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:15:30,792 INFO L225 Difference]: With dead ends: 42 [2021-05-02 20:15:30,792 INFO L226 Difference]: Without dead ends: 39 [2021-05-02 20:15:30,792 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:15:30,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-05-02 20:15:30,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-05-02 20:15:30,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.2) internal successors, (30), 26 states have internal predecessors, (30), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 20:15:30,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2021-05-02 20:15:30,797 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 43 [2021-05-02 20:15:30,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:15:30,797 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2021-05-02 20:15:30,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-05-02 20:15:30,797 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2021-05-02 20:15:30,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-02 20:15:30,798 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:15:30,798 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-05-02 20:15:31,020 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:15:31,020 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:15:31,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:15:31,021 INFO L82 PathProgramCache]: Analyzing trace with hash 270500047, now seen corresponding path program 1 times [2021-05-02 20:15:31,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:15:31,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143183231] [2021-05-02 20:15:31,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:15:31,031 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:15:31,032 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [820588256] [2021-05-02 20:15:31,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 20:15:31,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:15:31,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 35 conjunts are in the unsatisfiable core [2021-05-02 20:15:31,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:15:31,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:31,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:31,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:31,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:31,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:31,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:31,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:31,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:31,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:31,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:31,940 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 31 [2021-05-02 20:15:32,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:32,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:32,375 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 20:15:32,376 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:15:32,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143183231] [2021-05-02 20:15:32,376 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:15:32,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820588256] [2021-05-02 20:15:32,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820588256] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:15:32,376 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:15:32,376 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-05-02 20:15:32,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365955780] [2021-05-02 20:15:32,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 20:15:32,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:15:32,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 20:15:32,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-05-02 20:15:32,380 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-05-02 20:15:33,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:15:33,016 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2021-05-02 20:15:33,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 20:15:33,016 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 45 [2021-05-02 20:15:33,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:15:33,017 INFO L225 Difference]: With dead ends: 47 [2021-05-02 20:15:33,017 INFO L226 Difference]: Without dead ends: 46 [2021-05-02 20:15:33,018 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 778.5ms TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2021-05-02 20:15:33,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-05-02 20:15:33,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-05-02 20:15:33,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 31 states have internal predecessors, (34), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 20:15:33,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2021-05-02 20:15:33,022 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 45 [2021-05-02 20:15:33,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:15:33,022 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2021-05-02 20:15:33,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-05-02 20:15:33,022 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2021-05-02 20:15:33,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-02 20:15:33,023 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:15:33,023 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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] [2021-05-02 20:15:33,235 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:15:33,235 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:15:33,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:15:33,236 INFO L82 PathProgramCache]: Analyzing trace with hash -575889733, now seen corresponding path program 2 times [2021-05-02 20:15:33,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:15:33,236 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539054028] [2021-05-02 20:15:33,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:15:33,256 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:15:33,256 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [243377272] [2021-05-02 20:15:33,256 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:15:33,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 20:15:33,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:15:33,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-02 20:15:33,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:15:33,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:33,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:33,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:33,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:33,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:33,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:33,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:33,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:33,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:33,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:35,369 WARN L205 SmtUtils]: Spent 771.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 28 [2021-05-02 20:15:35,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:35,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:42,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:42,396 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 15 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-02 20:15:42,396 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:15:42,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539054028] [2021-05-02 20:15:42,396 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:15:42,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243377272] [2021-05-02 20:15:42,396 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243377272] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:15:42,397 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:15:42,397 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-02 20:15:42,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578167799] [2021-05-02 20:15:42,397 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 20:15:42,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:15:42,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 20:15:42,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-05-02 20:15:42,398 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-05-02 20:15:43,008 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2021-05-02 20:15:45,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:15:45,152 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2021-05-02 20:15:45,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 20:15:45,152 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 53 [2021-05-02 20:15:45,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:15:45,153 INFO L225 Difference]: With dead ends: 55 [2021-05-02 20:15:45,153 INFO L226 Difference]: Without dead ends: 48 [2021-05-02 20:15:45,154 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1945.1ms TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-05-02 20:15:45,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-05-02 20:15:45,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-05-02 20:15:45,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 32 states have (on average 1.125) internal successors, (36), 33 states have internal predecessors, (36), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 20:15:45,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2021-05-02 20:15:45,158 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 53 [2021-05-02 20:15:45,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:15:45,158 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2021-05-02 20:15:45,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-05-02 20:15:45,159 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2021-05-02 20:15:45,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-02 20:15:45,159 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:15:45,160 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 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] [2021-05-02 20:15:45,364 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-05-02 20:15:45,365 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:15:45,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:15:45,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1631897610, now seen corresponding path program 3 times [2021-05-02 20:15:45,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:15:45,369 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750245109] [2021-05-02 20:15:45,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:15:45,381 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:15:45,381 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [221002267] [2021-05-02 20:15:45,381 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:15:45,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-02 20:15:45,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:15:45,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 59 conjunts are in the unsatisfiable core [2021-05-02 20:15:46,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:15:46,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:46,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:46,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:46,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:46,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:46,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:46,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:46,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:46,399 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2021-05-02 20:15:46,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:46,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:47,072 WARN L205 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2021-05-02 20:15:47,464 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2021-05-02 20:15:47,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:47,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:50,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:51,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:51,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:51,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:51,741 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 551 DAG size of output: 555 [2021-05-02 20:15:51,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:15:52,021 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 571 [2021-05-02 20:15:52,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:19:26,590 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:19:26,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750245109] [2021-05-02 20:19:26,590 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:19:26,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221002267] [2021-05-02 20:19:26,590 WARN L348 FreeRefinementEngine]: Global settings require throwing the following exception [2021-05-02 20:19:26,791 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:19:26,792 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NegativeArraySizeException: -978752248 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir$ExplicitLhsPolynomialRelations.buildDualFiniteJunction(DualJunctionTir.java:651) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir$ExplicitLhsPolynomialRelations.buildCorrespondingFiniteJunctionForAntiDer(DualJunctionTir.java:615) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir$ExplicitLhsPolynomialRelations.buildBoundConstraint(DualJunctionTir.java:451) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateConjuncts(DualJunctionTir.java:205) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne(DualJunctionTir.java:160) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryExhaustivelyToEliminate(DualJunctionTir.java:125) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminate(DualJunctionTir.java:112) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:869) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:835) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:753) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:384) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:316) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.convert(QuantifierPusher.java:227) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:144) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:166) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:160) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:465) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:316) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.convert(QuantifierPusher.java:227) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:144) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:166) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:160) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.doit(QuantifierPusher.java:609) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:405) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:316) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.convert(QuantifierPusher.java:227) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:144) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:166) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:248) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:612) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:437) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:69) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:63) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateAllErrorsAtOnce(TraceAbstractionStarter.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-05-02 20:19:26,800 INFO L168 Benchmark]: Toolchain (without parser) took 239299.32 ms. Allocated memory was 180.4 MB in the beginning and 7.6 GB in the end (delta: 7.4 GB). Free memory was 145.3 MB in the beginning and 5.4 GB in the end (delta: -5.2 GB). Peak memory consumption was 5.7 GB. Max. memory is 8.0 GB. [2021-05-02 20:19:26,800 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 180.4 MB. Free memory is still 162.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 20:19:26,800 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.07 ms. Allocated memory is still 180.4 MB. Free memory was 145.1 MB in the beginning and 164.4 MB in the end (delta: -19.3 MB). Peak memory consumption was 14.2 MB. Max. memory is 8.0 GB. [2021-05-02 20:19:26,800 INFO L168 Benchmark]: Boogie Preprocessor took 74.46 ms. Allocated memory is still 180.4 MB. Free memory was 164.4 MB in the beginning and 162.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 20:19:26,801 INFO L168 Benchmark]: RCFGBuilder took 377.55 ms. Allocated memory is still 180.4 MB. Free memory was 162.9 MB in the beginning and 147.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-02 20:19:26,801 INFO L168 Benchmark]: IcfgTransformer took 17.72 ms. Allocated memory is still 180.4 MB. Free memory was 147.1 MB in the beginning and 145.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 20:19:26,801 INFO L168 Benchmark]: TraceAbstraction took 238576.17 ms. Allocated memory was 180.4 MB in the beginning and 7.6 GB in the end (delta: 7.4 GB). Free memory was 145.0 MB in the beginning and 5.4 GB in the end (delta: -5.2 GB). Peak memory consumption was 5.7 GB. Max. memory is 8.0 GB. [2021-05-02 20:19:26,801 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 180.4 MB. Free memory is still 162.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 244.07 ms. Allocated memory is still 180.4 MB. Free memory was 145.1 MB in the beginning and 164.4 MB in the end (delta: -19.3 MB). Peak memory consumption was 14.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 74.46 ms. Allocated memory is still 180.4 MB. Free memory was 164.4 MB in the beginning and 162.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 377.55 ms. Allocated memory is still 180.4 MB. Free memory was 162.9 MB in the beginning and 147.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 17.72 ms. Allocated memory is still 180.4 MB. Free memory was 147.1 MB in the beginning and 145.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 238576.17 ms. Allocated memory was 180.4 MB in the beginning and 7.6 GB in the end (delta: 7.4 GB). Free memory was 145.0 MB in the beginning and 5.4 GB in the end (delta: -5.2 GB). Peak memory consumption was 5.7 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NegativeArraySizeException: -978752248 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NegativeArraySizeException: -978752248: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir$ExplicitLhsPolynomialRelations.buildDualFiniteJunction(DualJunctionTir.java:651) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...