/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/divbin2_valuebound1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 20:04:02,270 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 20:04:02,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 20:04:02,311 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 20:04:02,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 20:04:02,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 20:04:02,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 20:04:02,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 20:04:02,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 20:04:02,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 20:04:02,324 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 20:04:02,326 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 20:04:02,327 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 20:04:02,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 20:04:02,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 20:04:02,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 20:04:02,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 20:04:02,344 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 20:04:02,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 20:04:02,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 20:04:02,346 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 20:04:02,355 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 20:04:02,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 20:04:02,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 20:04:02,357 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 20:04:02,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 20:04:02,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 20:04:02,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 20:04:02,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 20:04:02,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 20:04:02,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 20:04:02,358 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 20:04:02,358 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 20:04:02,358 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 20:04:02,358 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 20:04:02,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 20:04:02,359 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 20:04:02,359 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 20:04:02,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 20:04:02,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 20:04:02,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 20:04:02,360 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 20:04:02,361 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 20:04:02,361 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 20:04:02,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 20:04:02,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 20:04:02,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 20:04:02,695 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 20:04:02,697 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 20:04:02,698 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/divbin2_valuebound1.i [2021-05-02 20:04:02,761 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd33458a6/9b7716ae65734f39b717760b6979f8f6/FLAGbda9b3e09 [2021-05-02 20:04:03,180 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 20:04:03,181 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin2_valuebound1.i [2021-05-02 20:04:03,186 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd33458a6/9b7716ae65734f39b717760b6979f8f6/FLAGbda9b3e09 [2021-05-02 20:04:03,200 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd33458a6/9b7716ae65734f39b717760b6979f8f6 [2021-05-02 20:04:03,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 20:04:03,204 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 20:04:03,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 20:04:03,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 20:04:03,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 20:04:03,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 08:04:03" (1/1) ... [2021-05-02 20:04:03,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c71304e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:04:03, skipping insertion in model container [2021-05-02 20:04:03,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 08:04:03" (1/1) ... [2021-05-02 20:04:03,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 20:04:03,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 20:04:03,333 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/divbin2_valuebound1.i[959,972] [2021-05-02 20:04:03,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 20:04:03,350 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 20:04:03,361 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/divbin2_valuebound1.i[959,972] [2021-05-02 20:04:03,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 20:04:03,378 INFO L208 MainTranslator]: Completed translation [2021-05-02 20:04:03,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:04:03 WrapperNode [2021-05-02 20:04:03,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 20:04:03,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 20:04:03,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 20:04:03,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 20:04:03,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:04:03" (1/1) ... [2021-05-02 20:04:03,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:04:03" (1/1) ... [2021-05-02 20:04:03,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:04:03" (1/1) ... [2021-05-02 20:04:03,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:04:03" (1/1) ... [2021-05-02 20:04:03,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:04:03" (1/1) ... [2021-05-02 20:04:03,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:04:03" (1/1) ... [2021-05-02 20:04:03,449 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:04:03" (1/1) ... [2021-05-02 20:04:03,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 20:04:03,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 20:04:03,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 20:04:03,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 20:04:03,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:04:03" (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 20:04:03,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 20:04:03,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 20:04:03,518 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 20:04:03,519 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 20:04:03,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 20:04:03,519 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 20:04:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 20:04:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 20:04:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-02 20:04:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-02 20:04:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 20:04:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 20:04:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2021-05-02 20:04:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 20:04:03,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 20:04:03,521 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 20:04:03,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 20:04:03,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 20:04:03,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 20:04:03,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 20:04:03,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 20:04:03,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 20:04:03,775 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 20:04:03,775 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-02 20:04:03,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:04:03 BoogieIcfgContainer [2021-05-02 20:04:03,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 20:04:03,777 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 20:04:03,777 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 20:04:03,777 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 20:04:03,779 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:04:03" (1/1) ... [2021-05-02 20:04:03,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 08:04:03 BasicIcfg [2021-05-02 20:04:03,796 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 20:04:03,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 20:04:03,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 20:04:03,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 20:04:03,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 08:04:03" (1/4) ... [2021-05-02 20:04:03,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ae66b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 08:04:03, skipping insertion in model container [2021-05-02 20:04:03,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:04:03" (2/4) ... [2021-05-02 20:04:03,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ae66b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 08:04:03, skipping insertion in model container [2021-05-02 20:04:03,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:04:03" (3/4) ... [2021-05-02 20:04:03,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ae66b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 08:04:03, skipping insertion in model container [2021-05-02 20:04:03,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 08:04:03" (4/4) ... [2021-05-02 20:04:03,807 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_valuebound1.iJordan [2021-05-02 20:04:03,811 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 20:04:03,815 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 20:04:03,826 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 20:04:03,849 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 20:04:03,849 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 20:04:03,849 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 20:04:03,849 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 20:04:03,849 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 20:04:03,849 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 20:04:03,849 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 20:04:03,849 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 20:04:03,863 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 20:04:03,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-02 20:04:03,874 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:04:03,875 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:04:03,875 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:04:03,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:04:03,879 INFO L82 PathProgramCache]: Analyzing trace with hash 483266332, now seen corresponding path program 1 times [2021-05-02 20:04:03,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:04:03,886 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216279357] [2021-05-02 20:04:03,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:04:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:04:04,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 20:04:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:04:04,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 20:04:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:04:04,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 20:04:04,103 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:04:04,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216279357] [2021-05-02 20:04:04,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216279357] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:04:04,105 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:04:04,105 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 20:04:04,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209050349] [2021-05-02 20:04:04,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 20:04:04,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:04:04,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 20:04:04,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:04:04,119 INFO L87 Difference]: Start difference. First operand has 30 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 20:04:04,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:04:04,179 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2021-05-02 20:04:04,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 20:04:04,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-05-02 20:04:04,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:04:04,188 INFO L225 Difference]: With dead ends: 30 [2021-05-02 20:04:04,188 INFO L226 Difference]: Without dead ends: 25 [2021-05-02 20:04:04,189 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:04:04,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-05-02 20:04:04,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-05-02 20:04:04,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 20:04:04,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2021-05-02 20:04:04,224 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 18 [2021-05-02 20:04:04,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:04:04,225 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-05-02 20:04:04,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 20:04:04,226 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2021-05-02 20:04:04,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-05-02 20:04:04,227 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:04:04,227 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:04:04,227 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 20:04:04,227 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:04:04,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:04:04,228 INFO L82 PathProgramCache]: Analyzing trace with hash -2138426952, now seen corresponding path program 1 times [2021-05-02 20:04:04,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:04:04,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702197197] [2021-05-02 20:04:04,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:04:04,259 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:04:04,260 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [464813710] [2021-05-02 20:04:04,260 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 20:04:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:04:04,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 20:04:04,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:04:04,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:04:04,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:04:04,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 20:04:04,583 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:04:04,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702197197] [2021-05-02 20:04:04,584 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:04:04,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464813710] [2021-05-02 20:04:04,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464813710] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:04:04,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:04:04,584 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-02 20:04:04,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673440530] [2021-05-02 20:04:04,585 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 20:04:04,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:04:04,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 20:04:04,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-05-02 20:04:04,586 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 20:04:04,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:04:04,683 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2021-05-02 20:04:04,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 20:04:04,684 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-05-02 20:04:04,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:04:04,685 INFO L225 Difference]: With dead ends: 35 [2021-05-02 20:04:04,685 INFO L226 Difference]: Without dead ends: 34 [2021-05-02 20:04:04,686 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 127.3ms TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-05-02 20:04:04,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-05-02 20:04:04,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-05-02 20:04:04,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 24 states have internal predecessors, (28), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 20:04:04,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2021-05-02 20:04:04,689 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 19 [2021-05-02 20:04:04,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:04:04,690 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2021-05-02 20:04:04,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 20:04:04,690 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2021-05-02 20:04:04,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-02 20:04:04,690 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:04:04,690 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:04:04,907 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 20:04:04,908 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:04:04,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:04:04,909 INFO L82 PathProgramCache]: Analyzing trace with hash -554838191, now seen corresponding path program 1 times [2021-05-02 20:04:04,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:04:04,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557357665] [2021-05-02 20:04:04,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:04:04,921 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:04:04,921 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1230999199] [2021-05-02 20:04:04,921 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 20:04:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:04:04,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 20:04:04,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:04:05,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:04:05,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:04:05,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 20:04:05,163 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:04:05,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557357665] [2021-05-02 20:04:05,163 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:04:05,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230999199] [2021-05-02 20:04:05,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230999199] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:04:05,164 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:04:05,164 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-02 20:04:05,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36577722] [2021-05-02 20:04:05,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 20:04:05,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:04:05,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 20:04:05,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-05-02 20:04:05,167 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 20:04:05,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:04:05,271 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2021-05-02 20:04:05,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 20:04:05,272 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2021-05-02 20:04:05,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:04:05,274 INFO L225 Difference]: With dead ends: 43 [2021-05-02 20:04:05,274 INFO L226 Difference]: Without dead ends: 42 [2021-05-02 20:04:05,275 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 59.2ms TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-05-02 20:04:05,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-05-02 20:04:05,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-05-02 20:04:05,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 29 states have (on average 1.206896551724138) internal successors, (35), 30 states have internal predecessors, (35), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 20:04:05,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2021-05-02 20:04:05,292 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 21 [2021-05-02 20:04:05,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:04:05,292 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2021-05-02 20:04:05,292 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 20:04:05,292 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2021-05-02 20:04:05,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-02 20:04:05,293 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:04:05,294 INFO L523 BasicCegarLoop]: trace histogram [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 20:04:05,509 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:04:05,509 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:04:05,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:04:05,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1600606598, now seen corresponding path program 1 times [2021-05-02 20:04:05,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:04:05,510 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657433412] [2021-05-02 20:04:05,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:04:05,518 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:04:05,518 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [605995758] [2021-05-02 20:04:05,518 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 20:04:05,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:04:05,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 20:04:05,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:04:05,683 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 20:04:05,683 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:04:05,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657433412] [2021-05-02 20:04:05,684 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:04:05,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605995758] [2021-05-02 20:04:05,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605995758] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:04:05,684 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:04:05,684 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 20:04:05,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535976183] [2021-05-02 20:04:05,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 20:04:05,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:04:05,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 20:04:05,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:04:05,693 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 20:04:05,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:04:05,714 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2021-05-02 20:04:05,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 20:04:05,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2021-05-02 20:04:05,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:04:05,715 INFO L225 Difference]: With dead ends: 42 [2021-05-02 20:04:05,715 INFO L226 Difference]: Without dead ends: 35 [2021-05-02 20:04:05,716 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:04:05,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-02 20:04:05,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-05-02 20:04:05,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 20:04:05,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-05-02 20:04:05,726 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 27 [2021-05-02 20:04:05,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:04:05,726 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-05-02 20:04:05,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 20:04:05,726 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-05-02 20:04:05,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 20:04:05,727 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:04:05,728 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:04:05,940 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:04:05,943 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:04:05,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:04:05,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1664896543, now seen corresponding path program 1 times [2021-05-02 20:04:05,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:04:05,944 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428333540] [2021-05-02 20:04:05,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:04:05,953 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:04:05,953 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1502434618] [2021-05-02 20:04:05,953 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 20:04:06,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:04:06,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-02 20:04:06,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:04:06,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:04:06,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:04:06,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:04:06,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:04:06,181 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 20:04:06,182 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:04:06,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428333540] [2021-05-02 20:04:06,182 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:04:06,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502434618] [2021-05-02 20:04:06,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502434618] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:04:06,182 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:04:06,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-02 20:04:06,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726803781] [2021-05-02 20:04:06,183 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 20:04:06,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:04:06,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 20:04:06,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-05-02 20:04:06,183 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 20:04:06,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:04:06,294 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2021-05-02 20:04:06,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 20:04:06,295 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2021-05-02 20:04:06,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:04:06,296 INFO L225 Difference]: With dead ends: 43 [2021-05-02 20:04:06,296 INFO L226 Difference]: Without dead ends: 42 [2021-05-02 20:04:06,296 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 80.6ms TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-05-02 20:04:06,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-05-02 20:04:06,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-05-02 20:04:06,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 29 states have (on average 1.103448275862069) internal successors, (32), 30 states have internal predecessors, (32), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 20:04:06,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2021-05-02 20:04:06,299 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 29 [2021-05-02 20:04:06,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:04:06,299 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2021-05-02 20:04:06,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 20:04:06,299 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2021-05-02 20:04:06,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-02 20:04:06,300 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:04:06,300 INFO L523 BasicCegarLoop]: trace histogram [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] [2021-05-02 20:04:06,512 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:04:06,513 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:04:06,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:04:06,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1815734547, now seen corresponding path program 2 times [2021-05-02 20:04:06,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:04:06,513 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140629294] [2021-05-02 20:04:06,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:04:06,521 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:04:06,521 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [875824419] [2021-05-02 20:04:06,521 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 20:04:06,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 20:04:06,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:04:06,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 20:04:06,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:04:06,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:04:06,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:04:06,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:04:06,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:04:06,794 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 20:04:06,794 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:04:06,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140629294] [2021-05-02 20:04:06,794 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:04:06,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875824419] [2021-05-02 20:04:06,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875824419] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:04:06,795 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:04:06,795 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-02 20:04:06,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585875149] [2021-05-02 20:04:06,795 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 20:04:06,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:04:06,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 20:04:06,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-05-02 20:04:06,796 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 20:04:06,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:04:06,871 INFO L93 Difference]: Finished difference Result 31 states and 30 transitions. [2021-05-02 20:04:06,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 20:04:06,872 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 37 [2021-05-02 20:04:06,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:04:06,874 INFO L225 Difference]: With dead ends: 31 [2021-05-02 20:04:06,874 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 20:04:06,874 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 134.3ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-05-02 20:04:06,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 20:04:06,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 20:04:06,874 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 20:04:06,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 20:04:06,874 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2021-05-02 20:04:06,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:04:06,874 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 20:04:06,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 20:04:06,875 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 20:04:06,875 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 20:04:07,084 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-05-02 20:04:07,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 08:04:07 BasicIcfg [2021-05-02 20:04:07,089 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 20:04:07,090 INFO L168 Benchmark]: Toolchain (without parser) took 3885.51 ms. Allocated memory was 184.5 MB in the beginning and 227.5 MB in the end (delta: 43.0 MB). Free memory was 150.4 MB in the beginning and 165.6 MB in the end (delta: -15.2 MB). Peak memory consumption was 29.0 MB. Max. memory is 8.0 GB. [2021-05-02 20:04:07,090 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 184.5 MB. Free memory is still 166.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 20:04:07,090 INFO L168 Benchmark]: CACSL2BoogieTranslator took 172.98 ms. Allocated memory is still 184.5 MB. Free memory was 150.2 MB in the beginning and 140.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-05-02 20:04:07,090 INFO L168 Benchmark]: Boogie Preprocessor took 70.75 ms. Allocated memory is still 184.5 MB. Free memory was 140.2 MB in the beginning and 168.8 MB in the end (delta: -28.6 MB). Peak memory consumption was 4.3 MB. Max. memory is 8.0 GB. [2021-05-02 20:04:07,090 INFO L168 Benchmark]: RCFGBuilder took 325.02 ms. Allocated memory is still 184.5 MB. Free memory was 168.8 MB in the beginning and 153.6 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-02 20:04:07,090 INFO L168 Benchmark]: IcfgTransformer took 19.37 ms. Allocated memory is still 184.5 MB. Free memory was 153.6 MB in the beginning and 152.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 20:04:07,091 INFO L168 Benchmark]: TraceAbstraction took 3289.80 ms. Allocated memory was 184.5 MB in the beginning and 227.5 MB in the end (delta: 43.0 MB). Free memory was 151.6 MB in the beginning and 165.6 MB in the end (delta: -13.9 MB). Peak memory consumption was 30.0 MB. Max. memory is 8.0 GB. [2021-05-02 20:04:07,091 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 184.5 MB. Free memory is still 166.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 172.98 ms. Allocated memory is still 184.5 MB. Free memory was 150.2 MB in the beginning and 140.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 70.75 ms. Allocated memory is still 184.5 MB. Free memory was 140.2 MB in the beginning and 168.8 MB in the end (delta: -28.6 MB). Peak memory consumption was 4.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 325.02 ms. Allocated memory is still 184.5 MB. Free memory was 168.8 MB in the beginning and 153.6 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 19.37 ms. Allocated memory is still 184.5 MB. Free memory was 153.6 MB in the beginning and 152.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3289.80 ms. Allocated memory was 184.5 MB in the beginning and 227.5 MB in the end (delta: 43.0 MB). Free memory was 151.6 MB in the beginning and 165.6 MB in the end (delta: -13.9 MB). Peak memory consumption was 30.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: 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, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3238.4ms, OverallIterations: 6, TraceHistogramMax: 3, EmptinessCheckTime: 19.8ms, AutomataDifference: 511.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 139 SDtfs, 97 SDslu, 457 SDs, 0 SdLazy, 358 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 259.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 145 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 452.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=3, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 56.9ms AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 43.4ms SsaConstructionTime, 155.6ms SatisfiabilityAnalysisTime, 1072.4ms InterpolantComputationTime, 151 NumberOfCodeBlocks, 151 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 145 ConstructedInterpolants, 0 QuantifiedInterpolants, 781 SizeOfPredicates, 12 NumberOfNonLiveVariables, 537 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 19/30 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...