/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/loop-invgen/id_build.i.p+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 18:07:59,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 18:07:59,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 18:08:00,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 18:08:00,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 18:08:00,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 18:08:00,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 18:08:00,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 18:08:00,059 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 18:08:00,060 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 18:08:00,062 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 18:08:00,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 18:08:00,068 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 18:08:00,069 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 18:08:00,070 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 18:08:00,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 18:08:00,078 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 18:08:00,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 18:08:00,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 18:08:00,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 18:08:00,091 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 18:08:00,107 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 18:08:00,107 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 18:08:00,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 18:08:00,110 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 18:08:00,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 18:08:00,111 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 18:08:00,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 18:08:00,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 18:08:00,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 18:08:00,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 18:08:00,112 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 18:08:00,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 18:08:00,113 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 18:08:00,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 18:08:00,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 18:08:00,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 18:08:00,113 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 18:08:00,113 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 18:08:00,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 18:08:00,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 18:08:00,114 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 18:08:00,115 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 18:08:00,115 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 18:08:00,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 18:08:00,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 18:08:00,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 18:08:00,458 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 18:08:00,458 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 18:08:00,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i.p+sep-reducer.c [2021-05-02 18:08:00,515 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6ad1e30b/c001bba89d6f4e099e3ad7ef69527572/FLAG0a7c7f3c2 [2021-05-02 18:08:01,071 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 18:08:01,072 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.p+sep-reducer.c [2021-05-02 18:08:01,098 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6ad1e30b/c001bba89d6f4e099e3ad7ef69527572/FLAG0a7c7f3c2 [2021-05-02 18:08:01,532 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6ad1e30b/c001bba89d6f4e099e3ad7ef69527572 [2021-05-02 18:08:01,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 18:08:01,535 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 18:08:01,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 18:08:01,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 18:08:01,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 18:08:01,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:08:01" (1/1) ... [2021-05-02 18:08:01,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12107ea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:08:01, skipping insertion in model container [2021-05-02 18:08:01,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:08:01" (1/1) ... [2021-05-02 18:08:01,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 18:08:01,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 18:08:02,045 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.p+sep-reducer.c[34383,34396] [2021-05-02 18:08:02,089 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.p+sep-reducer.c[39106,39119] [2021-05-02 18:08:02,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:08:02,123 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 18:08:02,265 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.p+sep-reducer.c[34383,34396] [2021-05-02 18:08:02,281 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.p+sep-reducer.c[39106,39119] [2021-05-02 18:08:02,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:08:02,302 INFO L208 MainTranslator]: Completed translation [2021-05-02 18:08:02,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:08:02 WrapperNode [2021-05-02 18:08:02,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 18:08:02,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 18:08:02,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 18:08:02,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 18:08:02,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:08:02" (1/1) ... [2021-05-02 18:08:02,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:08:02" (1/1) ... [2021-05-02 18:08:02,339 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:08:02" (1/1) ... [2021-05-02 18:08:02,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:08:02" (1/1) ... [2021-05-02 18:08:02,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:08:02" (1/1) ... [2021-05-02 18:08:02,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:08:02" (1/1) ... [2021-05-02 18:08:02,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:08:02" (1/1) ... [2021-05-02 18:08:02,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 18:08:02,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 18:08:02,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 18:08:02,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 18:08:02,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:08:02" (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 18:08:02,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 18:08:02,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 18:08:02,490 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 18:08:02,490 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 18:08:02,490 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 18:08:02,490 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 18:08:02,490 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 18:08:02,490 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 18:08:02,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 18:08:02,491 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 18:08:02,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 18:08:02,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 18:08:02,491 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 18:08:02,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 18:08:02,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 18:08:02,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 18:08:02,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 18:08:02,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 18:08:02,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 18:08:03,515 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 18:08:03,515 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-02 18:08:03,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:08:03 BoogieIcfgContainer [2021-05-02 18:08:03,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 18:08:03,519 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 18:08:03,519 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 18:08:03,520 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 18:08:03,522 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:08:03" (1/1) ... [2021-05-02 18:08:03,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:08:03 BasicIcfg [2021-05-02 18:08:03,562 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 18:08:03,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 18:08:03,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 18:08:03,566 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 18:08:03,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 06:08:01" (1/4) ... [2021-05-02 18:08:03,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e22826d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:08:03, skipping insertion in model container [2021-05-02 18:08:03,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:08:02" (2/4) ... [2021-05-02 18:08:03,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e22826d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:08:03, skipping insertion in model container [2021-05-02 18:08:03,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:08:03" (3/4) ... [2021-05-02 18:08:03,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e22826d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:08:03, skipping insertion in model container [2021-05-02 18:08:03,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:08:03" (4/4) ... [2021-05-02 18:08:03,571 INFO L111 eAbstractionObserver]: Analyzing ICFG id_build.i.p+sep-reducer.cJordan [2021-05-02 18:08:03,575 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 18:08:03,579 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-05-02 18:08:03,592 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-05-02 18:08:03,607 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 18:08:03,607 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 18:08:03,607 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 18:08:03,607 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 18:08:03,607 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 18:08:03,607 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 18:08:03,607 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 18:08:03,608 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 18:08:03,623 INFO L276 IsEmpty]: Start isEmpty. Operand has 252 states, 245 states have (on average 1.9714285714285715) internal successors, (483), 247 states have internal predecessors, (483), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 18:08:03,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-05-02 18:08:03,635 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:08:03,636 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:08:03,636 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:08:03,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:08:03,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1372143926, now seen corresponding path program 1 times [2021-05-02 18:08:03,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:08:03,648 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362685099] [2021-05-02 18:08:03,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:08:03,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:08:04,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:08:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:08:04,068 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 18:08:04,069 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:08:04,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362685099] [2021-05-02 18:08:04,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362685099] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:08:04,069 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:08:04,070 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 18:08:04,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368156648] [2021-05-02 18:08:04,074 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 18:08:04,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:08:04,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 18:08:04,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 18:08:04,087 INFO L87 Difference]: Start difference. First operand has 252 states, 245 states have (on average 1.9714285714285715) internal successors, (483), 247 states have internal predecessors, (483), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:08:05,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:08:05,455 INFO L93 Difference]: Finished difference Result 263 states and 497 transitions. [2021-05-02 18:08:05,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 18:08:05,457 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 138 [2021-05-02 18:08:05,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:08:05,466 INFO L225 Difference]: With dead ends: 263 [2021-05-02 18:08:05,466 INFO L226 Difference]: Without dead ends: 253 [2021-05-02 18:08:05,467 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 239.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-02 18:08:05,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-05-02 18:08:05,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 246. [2021-05-02 18:08:05,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 242 states have (on average 1.1570247933884297) internal successors, (280), 242 states have internal predecessors, (280), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:08:05,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 283 transitions. [2021-05-02 18:08:05,508 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 283 transitions. Word has length 138 [2021-05-02 18:08:05,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:08:05,509 INFO L480 AbstractCegarLoop]: Abstraction has 246 states and 283 transitions. [2021-05-02 18:08:05,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:08:05,509 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 283 transitions. [2021-05-02 18:08:05,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-05-02 18:08:05,512 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:08:05,512 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:08:05,512 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 18:08:05,512 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:08:05,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:08:05,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1813108825, now seen corresponding path program 1 times [2021-05-02 18:08:05,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:08:05,514 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904054880] [2021-05-02 18:08:05,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:08:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:08:05,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:08:05,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:08:05,682 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 18:08:05,682 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:08:05,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904054880] [2021-05-02 18:08:05,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904054880] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:08:05,683 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:08:05,683 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 18:08:05,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257754311] [2021-05-02 18:08:05,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 18:08:05,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:08:05,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 18:08:05,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 18:08:05,686 INFO L87 Difference]: Start difference. First operand 246 states and 283 transitions. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 5 states have internal predecessors, (136), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:08:06,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:08:06,550 INFO L93 Difference]: Finished difference Result 256 states and 296 transitions. [2021-05-02 18:08:06,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 18:08:06,551 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 5 states have internal predecessors, (136), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 139 [2021-05-02 18:08:06,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:08:06,551 INFO L225 Difference]: With dead ends: 256 [2021-05-02 18:08:06,552 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 18:08:06,552 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 233.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-02 18:08:06,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 18:08:06,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 18:08:06,553 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 18:08:06,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 18:08:06,553 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 139 [2021-05-02 18:08:06,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:08:06,554 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 18:08:06,554 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 5 states have internal predecessors, (136), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:08:06,554 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 18:08:06,554 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 18:08:06,554 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 18:08:06,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:08:06 BasicIcfg [2021-05-02 18:08:06,559 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 18:08:06,559 INFO L168 Benchmark]: Toolchain (without parser) took 5024.46 ms. Allocated memory was 184.5 MB in the beginning and 307.2 MB in the end (delta: 122.7 MB). Free memory was 148.4 MB in the beginning and 197.0 MB in the end (delta: -48.7 MB). Peak memory consumption was 75.1 MB. Max. memory is 8.0 GB. [2021-05-02 18:08:06,560 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 184.5 MB. Free memory is still 166.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 18:08:06,560 INFO L168 Benchmark]: CACSL2BoogieTranslator took 765.29 ms. Allocated memory is still 184.5 MB. Free memory was 148.2 MB in the beginning and 149.8 MB in the end (delta: -1.7 MB). Peak memory consumption was 22.6 MB. Max. memory is 8.0 GB. [2021-05-02 18:08:06,561 INFO L168 Benchmark]: Boogie Preprocessor took 111.56 ms. Allocated memory is still 184.5 MB. Free memory was 149.8 MB in the beginning and 145.2 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-05-02 18:08:06,561 INFO L168 Benchmark]: RCFGBuilder took 1101.57 ms. Allocated memory was 184.5 MB in the beginning and 222.3 MB in the end (delta: 37.7 MB). Free memory was 145.2 MB in the beginning and 128.8 MB in the end (delta: 16.4 MB). Peak memory consumption was 60.4 MB. Max. memory is 8.0 GB. [2021-05-02 18:08:06,562 INFO L168 Benchmark]: IcfgTransformer took 43.20 ms. Allocated memory is still 222.3 MB. Free memory was 128.8 MB in the beginning and 124.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-05-02 18:08:06,563 INFO L168 Benchmark]: TraceAbstraction took 2995.03 ms. Allocated memory was 222.3 MB in the beginning and 307.2 MB in the end (delta: 84.9 MB). Free memory was 124.1 MB in the beginning and 197.0 MB in the end (delta: -73.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 8.0 GB. [2021-05-02 18:08:06,565 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 184.5 MB. Free memory is still 166.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 765.29 ms. Allocated memory is still 184.5 MB. Free memory was 148.2 MB in the beginning and 149.8 MB in the end (delta: -1.7 MB). Peak memory consumption was 22.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 111.56 ms. Allocated memory is still 184.5 MB. Free memory was 149.8 MB in the beginning and 145.2 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1101.57 ms. Allocated memory was 184.5 MB in the beginning and 222.3 MB in the end (delta: 37.7 MB). Free memory was 145.2 MB in the beginning and 128.8 MB in the end (delta: 16.4 MB). Peak memory consumption was 60.4 MB. Max. memory is 8.0 GB. * IcfgTransformer took 43.20 ms. Allocated memory is still 222.3 MB. Free memory was 128.8 MB in the beginning and 124.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2995.03 ms. Allocated memory was 222.3 MB in the beginning and 307.2 MB in the end (delta: 84.9 MB). Free memory was 124.1 MB in the beginning and 197.0 MB in the end (delta: -73.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2003]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 2312]: 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 3 procedures, 252 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2950.1ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 19.6ms, AutomataDifference: 2260.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 187 SDtfs, 1469 SDslu, 42 SDs, 0 SdLazy, 1973 SolverSat, 138 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1378.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 472.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=252occurred in iteration=0, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 29.6ms AutomataMinimizationTime, 2 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 19.0ms SsaConstructionTime, 111.0ms SatisfiabilityAnalysisTime, 412.4ms InterpolantComputationTime, 277 NumberOfCodeBlocks, 277 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 275 ConstructedInterpolants, 0 QuantifiedInterpolants, 677 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...