/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/loops-crafted-1/loopv1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 06:23:15,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 06:23:15,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 06:23:15,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 06:23:15,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 06:23:15,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 06:23:15,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 06:23:15,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 06:23:15,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 06:23:15,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 06:23:15,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 06:23:15,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 06:23:15,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 06:23:15,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 06:23:15,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 06:23:15,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 06:23:15,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 06:23:15,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 06:23:15,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 06:23:15,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 06:23:15,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 06:23:15,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 06:23:15,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 06:23:15,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 06:23:15,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 06:23:15,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 06:23:15,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 06:23:15,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 06:23:15,729 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 06:23:15,741 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 06:23:15,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 06:23:15,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 06:23:15,742 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 06:23:15,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 06:23:15,743 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 06:23:15,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 06:23:15,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 06:23:15,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 06:23:15,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 06:23:15,743 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 06:23:15,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 06:23:15,744 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 06:23:15,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 06:23:15,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 06:23:15,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 06:23:15,744 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 06:23:15,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 06:23:15,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 06:23:15,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 06:23:15,745 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 06:23:15,745 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 06:23:15,745 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 06:23:16,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 06:23:16,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 06:23:16,045 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 06:23:16,046 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 06:23:16,046 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 06:23:16,047 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/loopv1.c [2021-05-06 06:23:16,098 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1bb8855e/bca6196e336641b6ac82b5ddb6ea5c1b/FLAGc90a3fb44 [2021-05-06 06:23:16,739 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 06:23:16,739 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv1.c [2021-05-06 06:23:16,743 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1bb8855e/bca6196e336641b6ac82b5ddb6ea5c1b/FLAGc90a3fb44 [2021-05-06 06:23:16,867 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1bb8855e/bca6196e336641b6ac82b5ddb6ea5c1b [2021-05-06 06:23:16,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 06:23:16,871 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 06:23:16,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 06:23:16,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 06:23:16,878 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 06:23:16,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:23:16" (1/1) ... [2021-05-06 06:23:16,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68586cc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:23:16, skipping insertion in model container [2021-05-06 06:23:16,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:23:16" (1/1) ... [2021-05-06 06:23:16,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 06:23:16,892 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 06:23:16,973 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv1.c[456,469] [2021-05-06 06:23:16,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:23:16,984 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 06:23:16,991 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv1.c[456,469] [2021-05-06 06:23:16,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:23:17,002 INFO L208 MainTranslator]: Completed translation [2021-05-06 06:23:17,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:23:17 WrapperNode [2021-05-06 06:23:17,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 06:23:17,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 06:23:17,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 06:23:17,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 06:23:17,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:23:17" (1/1) ... [2021-05-06 06:23:17,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:23:17" (1/1) ... [2021-05-06 06:23:17,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:23:17" (1/1) ... [2021-05-06 06:23:17,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:23:17" (1/1) ... [2021-05-06 06:23:17,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:23:17" (1/1) ... [2021-05-06 06:23:17,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:23:17" (1/1) ... [2021-05-06 06:23:17,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:23:17" (1/1) ... [2021-05-06 06:23:17,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 06:23:17,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 06:23:17,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 06:23:17,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 06:23:17,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:23:17" (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 [2021-05-06 06:23:17,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 06:23:17,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 06:23:17,137 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 06:23:17,137 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 06:23:17,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 06:23:17,137 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 06:23:17,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 06:23:17,138 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 06:23:17,138 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 06:23:17,138 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 06:23:17,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 06:23:17,138 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 06:23:17,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 06:23:17,138 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 06:23:17,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 06:23:17,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 06:23:17,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 06:23:17,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 06:23:17,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 06:23:17,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 06:23:17,363 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 06:23:17,363 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 06:23:17,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:23:17 BoogieIcfgContainer [2021-05-06 06:23:17,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 06:23:17,365 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 06:23:17,365 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 06:23:17,365 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 06:23:17,367 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:23:17" (1/1) ... [2021-05-06 06:23:17,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:23:17 BasicIcfg [2021-05-06 06:23:17,392 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 06:23:17,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 06:23:17,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 06:23:17,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 06:23:17,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 06:23:16" (1/4) ... [2021-05-06 06:23:17,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd75eea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:23:17, skipping insertion in model container [2021-05-06 06:23:17,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:23:17" (2/4) ... [2021-05-06 06:23:17,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd75eea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:23:17, skipping insertion in model container [2021-05-06 06:23:17,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:23:17" (3/4) ... [2021-05-06 06:23:17,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd75eea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:23:17, skipping insertion in model container [2021-05-06 06:23:17,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:23:17" (4/4) ... [2021-05-06 06:23:17,397 INFO L111 eAbstractionObserver]: Analyzing ICFG loopv1.cJordan [2021-05-06 06:23:17,400 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 06:23:17,403 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 06:23:17,413 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 06:23:17,425 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 06:23:17,425 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 06:23:17,425 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 06:23:17,426 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 06:23:17,426 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 06:23:17,426 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 06:23:17,426 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 06:23:17,426 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 06:23:17,441 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 06:23:17,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 06:23:17,445 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:23:17,446 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:23:17,446 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:23:17,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:23:17,449 INFO L82 PathProgramCache]: Analyzing trace with hash 959820703, now seen corresponding path program 1 times [2021-05-06 06:23:17,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:23:17,459 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754623555] [2021-05-06 06:23:17,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:23:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:17,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:23:17,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:17,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:23:17,674 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:23:17,674 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754623555] [2021-05-06 06:23:17,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754623555] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:23:17,675 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:23:17,675 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 06:23:17,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614192673] [2021-05-06 06:23:17,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 06:23:17,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:23:17,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 06:23:17,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 06:23:17,694 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:17,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:23:17,746 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-05-06 06:23:17,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 06:23:17,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-06 06:23:17,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:23:17,752 INFO L225 Difference]: With dead ends: 21 [2021-05-06 06:23:17,753 INFO L226 Difference]: Without dead ends: 14 [2021-05-06 06:23:17,754 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 06:23:17,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-05-06 06:23:17,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-05-06 06:23:17,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:17,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-05-06 06:23:17,773 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 12 [2021-05-06 06:23:17,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:23:17,774 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-05-06 06:23:17,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:17,774 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-05-06 06:23:17,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 06:23:17,775 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:23:17,775 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:23:17,775 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 06:23:17,775 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:23:17,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:23:17,777 INFO L82 PathProgramCache]: Analyzing trace with hash 960744224, now seen corresponding path program 1 times [2021-05-06 06:23:17,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:23:17,777 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738121753] [2021-05-06 06:23:17,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:23:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:17,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:23:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:17,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:23:17,930 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:23:17,930 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738121753] [2021-05-06 06:23:17,930 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738121753] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:23:17,930 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:23:17,930 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-06 06:23:17,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079357113] [2021-05-06 06:23:17,932 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 06:23:17,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:23:17,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 06:23:17,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-06 06:23:17,933 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:18,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:23:18,091 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-05-06 06:23:18,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 06:23:18,091 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-06 06:23:18,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:23:18,093 INFO L225 Difference]: With dead ends: 19 [2021-05-06 06:23:18,093 INFO L226 Difference]: Without dead ends: 16 [2021-05-06 06:23:18,093 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 128.6ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-06 06:23:18,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-05-06 06:23:18,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2021-05-06 06:23:18,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:18,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-05-06 06:23:18,096 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2021-05-06 06:23:18,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:23:18,096 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-05-06 06:23:18,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:18,096 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-05-06 06:23:18,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-06 06:23:18,097 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:23:18,097 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:23:18,097 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 06:23:18,097 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:23:18,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:23:18,097 INFO L82 PathProgramCache]: Analyzing trace with hash 767672894, now seen corresponding path program 1 times [2021-05-06 06:23:18,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:23:18,098 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902861318] [2021-05-06 06:23:18,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:23:18,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:18,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:23:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:18,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:23:18,180 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:23:18,180 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902861318] [2021-05-06 06:23:18,180 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902861318] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:18,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57157649] [2021-05-06 06:23:18,181 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 [2021-05-06 06:23:18,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:23:18,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-06 06:23:18,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:23:18,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:23:18,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:23:18,354 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57157649] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:23:18,354 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:23:18,354 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2021-05-06 06:23:18,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440703646] [2021-05-06 06:23:18,354 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-06 06:23:18,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:23:18,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-06 06:23:18,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-05-06 06:23:18,355 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 10 states, 10 states have (on average 1.5) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:18,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:23:18,588 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2021-05-06 06:23:18,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 06:23:18,589 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-05-06 06:23:18,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:23:18,589 INFO L225 Difference]: With dead ends: 17 [2021-05-06 06:23:18,590 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 06:23:18,591 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 222.3ms TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-05-06 06:23:18,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 06:23:18,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 06:23:18,591 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) [2021-05-06 06:23:18,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 06:23:18,592 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-05-06 06:23:18,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:23:18,592 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 06:23:18,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:23:18,592 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 06:23:18,592 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 06:23:18,809 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-06 06:23:18,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:23:18 BasicIcfg [2021-05-06 06:23:18,812 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 06:23:18,813 INFO L168 Benchmark]: Toolchain (without parser) took 1941.78 ms. Allocated memory is still 181.4 MB. Free memory was 147.1 MB in the beginning and 119.0 MB in the end (delta: 28.1 MB). Peak memory consumption was 28.5 MB. Max. memory is 8.0 GB. [2021-05-06 06:23:18,813 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 181.4 MB. Free memory is still 163.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 06:23:18,814 INFO L168 Benchmark]: CACSL2BoogieTranslator took 127.41 ms. Allocated memory is still 181.4 MB. Free memory was 147.0 MB in the beginning and 137.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-06 06:23:18,814 INFO L168 Benchmark]: Boogie Preprocessor took 61.79 ms. Allocated memory is still 181.4 MB. Free memory was 137.4 MB in the beginning and 164.8 MB in the end (delta: -27.4 MB). Peak memory consumption was 8.2 MB. Max. memory is 8.0 GB. [2021-05-06 06:23:18,814 INFO L168 Benchmark]: RCFGBuilder took 298.58 ms. Allocated memory is still 181.4 MB. Free memory was 164.5 MB in the beginning and 149.8 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-06 06:23:18,814 INFO L168 Benchmark]: IcfgTransformer took 26.99 ms. Allocated memory is still 181.4 MB. Free memory was 149.3 MB in the beginning and 148.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-06 06:23:18,815 INFO L168 Benchmark]: TraceAbstraction took 1419.61 ms. Allocated memory is still 181.4 MB. Free memory was 147.7 MB in the beginning and 119.0 MB in the end (delta: 28.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 8.0 GB. [2021-05-06 06:23:18,816 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 181.4 MB. Free memory is still 163.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 127.41 ms. Allocated memory is still 181.4 MB. Free memory was 147.0 MB in the beginning and 137.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 61.79 ms. Allocated memory is still 181.4 MB. Free memory was 137.4 MB in the beginning and 164.8 MB in the end (delta: -27.4 MB). Peak memory consumption was 8.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 298.58 ms. Allocated memory is still 181.4 MB. Free memory was 164.5 MB in the beginning and 149.8 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 26.99 ms. Allocated memory is still 181.4 MB. Free memory was 149.3 MB in the beginning and 148.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1419.61 ms. Allocated memory is still 181.4 MB. Free memory was 147.7 MB in the beginning and 119.0 MB in the end (delta: 28.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: 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 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1385.7ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 14.9ms, AutomataDifference: 467.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 33 SDtfs, 41 SDslu, 50 SDs, 0 SdLazy, 106 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 115.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 393.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 13.5ms AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 27.4ms SsaConstructionTime, 109.2ms SatisfiabilityAnalysisTime, 395.7ms InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 191 SizeOfPredicates, 1 NumberOfNonLiveVariables, 104 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 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...